Bug 472918

Summary: Preview mode becomes unresponsive
Product: [Applications] digikam Reporter: † <myaccount132>
Component: Preview-ImageAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: normal CC: antti.t.leppanen62, caulier.gilles, metzpinguin
Priority: NOR    
Version: 8.1.0   
Target Milestone: ---   
Platform: Appimage   
OS: Linux   
Latest Commit: Version Fixed In: 8.5.0
Sentry Crash Report:
Attachments: full log #2
crash

Description † 2023-08-02 11:44:36 UTC 
Preview mode shifts preview and thumnail locations abruptly (from up to down and vice versa) and becomes unresponsive (*possibly* at time when hitting ESC to return to thumbnails). Program has to be restarted to get rid of it but now it keeps coming back very soon after restarting.

This has appeared frequently after switching from appimage 8.1.0 to 8.2.0. OR after starting to use iNaturalist export plugin (which view has different and not fatal UI unresponsiveness too).
Comment 1 † 2023-08-02 11:46:13 UTC 
sry 8.0.0 -> 8.1.0
Comment 2 † 2023-08-02 11:55:29 UTC 
Occurs also in Thumbnails mode trying to double click image to preview. Thumbnails become locked, scrollbar moves but doesn't scroll images and there's line at bottom half to show border of expected preview window (however it should be there but top half). iNat plugin open at background.
Comment 3 Maik Qualmann 2023-08-02 12:12:53 UTC 
Create a debug log from the terminal (with the Qt debug variable set) that captures the problem as it occurs.

https://www.digikam.org/contribute/

Maik
Comment 4 † 2023-08-03 22:50:59 UTC 
Here's end of the log file. There's two mentions of errors and - if related - there was earlier four times lines

Digikam::PreviewLoadingTask::execute: Preview quality:  2

above, which were now changed to

Digikam::PreviewLoadingTask::execute: Preview quality:  0

below.



unknown: Start of Image  ( 1 )
unknown: Miscellaneous marker 0xe1, length 20988  ( 1 )
unknown: Miscellaneous marker 0xe1, length 3994  ( 1 )
unknown: Miscellaneous marker 0xe2, length 94  ( 1 )
unknown: Define Quantization Table 0  precision 0  ( 1 )
unknown: Define Quantization Table 1  precision 0  ( 1 )
unknown: Start Of Frame 0xc0: width=4608, height=3456, components=3  ( 1 )
unknown:     Component 1: 2hx1v q=0  ( 1 )
unknown:     Component 2: 1hx1v q=1  ( 1 )
unknown:     Component 3: 1hx1v q=1  ( 1 )
unknown: Define Huffman Table 0x00  ( 1 )
unknown:           0   1   5   1   1   1   1   1  ( 2 )
unknown:           1   0   0   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x01  ( 1 )
unknown:           0   3   1   1   1   1   1   1  ( 2 )
unknown:           1   1   1   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x10  ( 1 )
unknown:           0   2   1   3   3   2   4   3  ( 2 )
unknown:           5   5   4   4   0   0   1 125  ( 2 )
unknown: Define Huffman Table 0x11  ( 1 )
unknown:           0   2   1   2   4   4   3   4  ( 2 )
unknown:           7   5   4   4   0   1   2 119  ( 2 )
unknown: Start Of Scan: 3 components  ( 1 )
unknown:     Component 1: dc=0 ac=0  ( 1 )
unknown:     Component 2: dc=1 ac=1  ( 1 )
unknown:     Component 3: dc=1 ac=1  ( 1 )
unknown:   Ss=0, Se=63, Ah=0, Al=0  ( 1 )
Digikam::DMetadata::getIccProfile: Exif color-space tag is sRGB. Using default sRGB ICC profile.
unknown: End Of Image  ( 1 )
Digikam::ActionThreadBase::setMaximumNumberOfThreads: Using  2  CPU core to run threads
Digikam::ActionThreadBase::run: Action Thread run  2  new jobs
Digikam::DFileOperations::sidecarFiles: Detected a sidecar "/PATH2/PATHa/PATHj/PATH_1021T160449.JPG.xmp"
Digikam::DFileOperations::sidecarFiles: Detected a sidecar "/PATH2/PATHa/PATHj/PATH_1021T160457.JPG.xmp"
Digikam::DFileOperations::sidecarFiles: Detected a sidecar "/PATH2/PATHa/PATHj/PATH_1021T160504.JPG.xmp"
unknown: QXcbConnection: XCB error: 3 (BadWindow), sequence: 14015, resource id: 23727813, major code: 40 (TranslateCoords), minor code: 0
Digikam::ActionThreadBase::slotJobFinished: One job is done
Digikam::IOJobsThread::slotOneJobFinished: Thread Finished
Digikam::ActionThreadBase::slotJobFinished: One job is done
Digikam::ActionThreadBase::cancel: Finish Main Thread
Digikam::ActionThreadBase::setMaximumNumberOfThreads: Using  2  CPU core to run threads
Digikam::ActionThreadBase::run: Action Thread run  1  new jobs
Digikam::ItemQueryBuilder::buildQueryFromXml: " ( (  ImagePositions.LongitudeNumber > ? AND ImagePositions.LatitudeNumber < ?  AND ImagePositions.LongitudeNumber < ? AND ImagePositions.LatitudeNumber > ?  ) ) "
Digikam::ItemLister::listSearch: Search query:
 "SELECT DISTINCT Images.id, Images.name, Images.album,        Albums.albumRoot,        ImageInformation.rating, Images.category,        ImageInformation.format, ImageInformation.creationDate,        Images.modificationDate, Images.fileSize,        ImageInformation.width, ImageInformation.height,        ImagePositions.latitudeNumber, ImagePositions.longitudeNumber  FROM Images        LEFT JOIN ImageInformation ON Images.id=ImageInformation.imageid        LEFT JOIN ImageMetadata    ON Images.id=ImageMetadata.imageid        LEFT JOIN VideoMetadata    ON Images.id=VideoMetadata.imageid        LEFT JOIN ImagePositions   ON Images.id=ImagePositions.imageid        LEFT JOIN ImageProperties  ON Images.id=ImageProperties.imageid        INNER JOIN Albums          ON Albums.id=Images.album WHERE Images.status=1 AND (  ( (  ImagePositions.LongitudeNumber > ? AND ImagePositions.LatitudeNumber < ?  AND ImagePositions.LongitudeNumber < ? AND ImagePositions.LatitudeNumber > ?  ) )  );" 
 (QVariant(double, PATH1), QVariant(double, PATH2), QVariant(double, PATH3), QVariant(double, PATH4))
Digikam::ItemLister::listSearch: Search result: 1320
Digikam::ActionThreadBase::cancel: Cancel Main Thread
Digikam::ActionThreadBase::slotJobFinished: One job is done
Digikam::ActionThreadBase::cancel: Finish Main Thread
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATHh/PATH_0728T191353.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATHh/PATH_0728T191353.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 8
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATHh/PATH_0728T191353.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATHh/PATH_0728T191353.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATHh/PATH_0728T191353.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATHh/PATH_0728T191353.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATHh/PATH_0728T191353.MP3"
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATHf/PATH_0131T154539.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATHf/PATH_0131T154539.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 13
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATHf/PATH_0131T154539.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATHf/PATH_0131T154539.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATHf/PATH_0131T154539.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATHf/PATH_0131T154539.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATHf/PATH_0131T154539.MP3"
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATHc/PATH_0602T133326.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATHc/PATH_0602T133326.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 19
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATHc/PATH_0602T133326.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATHc/PATH_0602T133326.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATHc/PATH_0602T133326.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATHc/PATH_0602T133326.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATHc/PATH_0602T133326.MP3"
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATHc/PATH_0602T133532.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATHc/PATH_0602T133532.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 14
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATHc/PATH_0602T133532.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATHc/PATH_0602T133532.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATHc/PATH_0602T133532.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATHc/PATH_0602T133532.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATHc/PATH_0602T133532.MP3"
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATHb/PATH_1009T100708.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATHb/PATH_1009T100708.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 13
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATHb/PATH_1009T100708.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATHb/PATH_1009T100708.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATHb/PATH_1009T100708.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATHb/PATH_1009T100708.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATHb/PATH_1009T100708.MP3"
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATHb/PATH_1009T101030.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATHb/PATH_1009T101030.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 16
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATHb/PATH_1009T101030.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATHb/PATH_1009T101030.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATHb/PATH_1009T101030.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATHb/PATH_1009T101030.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATHb/PATH_1009T101030.MP3"
Digikam::DMetadata::loadUsingFFmpeg: Parse metadada with FFMpeg: "/PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3"
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg audio stream metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: -----------------------------------------
Digikam::DMetadata::loadUsingFFmpeg: -- FFMpeg root container metadata entries :
Digikam::DMetadata::loadUsingFFmpeg: QMap()
Digikam::DMetadata::loadUsingFFmpeg: ------------------------------------------
Digikam::ExifToolParser::exifToolAvailable: Check ExifTool availability: true
Digikam::ExifToolParser::Private::startProcess: ExifTool "Load Chunks" "-TagsFromFile /PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3 -all:all -o -.exv"
Digikam::ExifToolProcess::Private::readOutput: ExifToolProcess::readOutput(): ExifTool command completed
Digikam::ExifToolParser::cmdCompleted: ExifTool complete command for action "Load Chunks" with elasped time (ms): 11
Digikam::ExifToolParser::cmdCompleted: EXV chunk size: 0
Digikam::ExifToolParser::cmdCompleted: ExifTool parsed command for action "Load Chunks" 1 properties decoded
Digikam::ExifToolParser::Private::jumpToResultCommand: ExifTool complete "Load Chunks" for "/PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3"
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool
Digikam::DMetadata::loadUsingExifTool: Metadata chunk loaded with ExifTool has no data
Digikam::DMetadata::load: Loading metadata with "FFMpeg" backend from "/PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3"
Digikam::ThumbnailCreator::createThumbnail: Trying to get thumbnail from "/PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3" ( "" )
Digikam::ThumbnailCreator::createThumbnail: Trying to load video preview with FFmpeg
QtAV::qtav_ffmpeg_log_callback: [FFmpeg:mp3] Estimating duration from bitrate, this may be inaccurate
Digikam::VideoThumbDecoder::Private::initializeVideo: Could not find video stream
Digikam::ThumbnailCreator::createThumbnail: Cannot create thumbnail for "/PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3"
Digikam::ThumbnailCreator::load: Thumbnail is null for  "/PATH2/PATHa/PATH_-12a/PATH_1226T084849.MP3"
Digikam::TileGrouper::updateClusters: iterating over  720  took  0.00457821  seconds
Digikam::TileGrouper::updateClusters: "created cluster 0: 15 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 1: 28 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 2: 39 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 3: 9 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 4: 11 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 5: 20 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 6: 19 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 7: 6 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 8: 29 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 9: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 10: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 11: 17 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 12: 62 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 13: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 14: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 15: 8 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 16: 7 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 17: 3 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 18: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 19: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 20: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 21: 7 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 22: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 23: 3 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 24: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 25: 8 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 26: 9 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 27: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 28: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 29: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 30: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 31: 8 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 32: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 33: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 34: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 35: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 36: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 37: 15 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 38: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 39: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 40: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 41: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 42: 3 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 43: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 44: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 45: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 46: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 47: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 48: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 49: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 50: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 51: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 52: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 53: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 54: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 55: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 56: 7 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 57: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 58: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 59: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 60: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 61: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 62: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 63: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 64: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 65: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 66: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 67: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 68: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 69: 1 tiles"
Digikam::TileGrouper::updateClusters: "level 9: 720 non empty tiles sorted into 70 clusters (720 searched)"
Digikam::PreviewLoadingTask::execute: Try to get preview from "/PATH2/PATHa/PATHi/PATH_0802T173122.JPG"
Digikam::PreviewLoadingTask::execute: Preview quality:  0
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from "/PATH2/PATHa/PATHi/PATH_0802T173122.JPG"
Digikam::PreviewLoadingTask::loadImagePreview: Try to load DImg preview from: "/PATH2/PATHa/PATHi/PATH_0802T173122.JPG"
Digikam::DImg::load: "/PATH2/PATHa/PATHi/PATH_0802T173122.JPG" : "JPEG" file identified
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from "/PATH2/PATHa/PATHi/PATH_0802T173122.JPG"
unknown: Start of Image  ( 1 )
unknown: Miscellaneous marker 0xe1, length 28668  ( 1 )
unknown: Miscellaneous marker 0xe1, length 3994  ( 1 )
unknown: Miscellaneous marker 0xe2, length 94  ( 1 )
unknown: Define Quantization Table 0  precision 0  ( 1 )
unknown: Define Quantization Table 1  precision 0  ( 1 )
unknown: Start Of Frame 0xc0: width=5184, height=3888, components=3  ( 1 )
unknown:     Component 1: 2hx1v q=0  ( 1 )
unknown:     Component 2: 1hx1v q=1  ( 1 )
unknown:     Component 3: 1hx1v q=1  ( 1 )
unknown: Define Huffman Table 0x00  ( 1 )
unknown:           0   1   5   1   1   1   1   1  ( 2 )
unknown:           1   0   0   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x01  ( 1 )
unknown:           0   3   1   1   1   1   1   1  ( 2 )
unknown:           1   1   1   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x10  ( 1 )
unknown:           0   2   1   3   3   2   4   3  ( 2 )
unknown:           5   5   4   4   0   0   1 125  ( 2 )
unknown: Define Huffman Table 0x11  ( 1 )
unknown:           0   2   1   2   4   4   3   4  ( 2 )
unknown:           7   5   4   4   0   1   2 119  ( 2 )
unknown: Start Of Scan: 3 components  ( 1 )
unknown:     Component 1: dc=0 ac=0  ( 1 )
unknown:     Component 2: dc=1 ac=1  ( 1 )
unknown:     Component 3: dc=1 ac=1  ( 1 )
unknown:   Ss=0, Se=63, Ah=0, Al=0  ( 1 )
Digikam::DMetadata::getIccProfile: Exif color-space tag is sRGB. Using default sRGB ICC profile.
unknown: End Of Image  ( 1 )
unknown: Photo "/PATH2/PATHa/PATHj/PATH_1021T160449.JPG" to observation 176508302 uploaded in 4969 msecs.
unknown: Photo "/PATH2/PATHa/PATHj/PATH_1021T160449.JPG" uploaded, observation 176508302 observation photo 286263005 photo 306875651
Digikam::MetaEngine::canWriteXmp: Cannot check Xmp access mode with Exiv2:(Error # 10 :  "/PATH2/PATHa/PATHj/PATH_1021T160449.JPG: Failed to open the data source: No such file or directory (errno = 2)" )
Digikam::StackedView::setViewMode: Stacked View Mode :  1
Digikam::FocusPointGroup::load: FocusPointsGroup: no Point to load
Digikam::PreviewLoadingTask::execute: Try to get preview from "/PATH2/PATHa/PATHd/PATH_0224T084328.JPG"
Digikam::PreviewLoadingTask::execute: Preview quality:  0
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from "/PATH2/PATHa/PATHd/PATH_0224T084328.JPG"
Digikam::PreviewLoadingTask::loadImagePreview: Try to load DImg preview from: "/PATH2/PATHa/PATHd/PATH_0224T084328.JPG"
Digikam::DImg::load: "/PATH2/PATHa/PATHd/PATH_0224T084328.JPG" : "JPEG" file identified
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from "/PATH2/PATHa/PATHd/PATH_0224T084328.JPG"
unknown: Start of Image  ( 1 )
unknown: Miscellaneous marker 0xe1, length 20988  ( 1 )
unknown: Miscellaneous marker 0xe1, length 3994  ( 1 )
unknown: Miscellaneous marker 0xe2, length 94  ( 1 )
unknown: Define Quantization Table 0  precision 0  ( 1 )
unknown: Define Quantization Table 1  precision 0  ( 1 )
unknown: Start Of Frame 0xc0: width=4608, height=3456, components=3  ( 1 )
unknown:     Component 1: 2hx1v q=0  ( 1 )
unknown:     Component 2: 1hx1v q=1  ( 1 )
unknown:     Component 3: 1hx1v q=1  ( 1 )
unknown: Define Huffman Table 0x00  ( 1 )
unknown:           0   1   5   1   1   1   1   1  ( 2 )
unknown:           1   0   0   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x01  ( 1 )
unknown:           0   3   1   1   1   1   1   1  ( 2 )
unknown:           1   1   1   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x10  ( 1 )
unknown:           0   2   1   3   3   2   4   3  ( 2 )
unknown:           5   5   4   4   0   0   1 125  ( 2 )
unknown: Define Huffman Table 0x11  ( 1 )
unknown:           0   2   1   2   4   4   3   4  ( 2 )
unknown:           7   5   4   4   0   1   2 119  ( 2 )
unknown: Start Of Scan: 3 components  ( 1 )
unknown:     Component 1: dc=0 ac=0  ( 1 )
unknown:     Component 2: dc=1 ac=1  ( 1 )
unknown:     Component 3: dc=1 ac=1  ( 1 )
unknown:   Ss=0, Se=63, Ah=0, Al=0  ( 1 )
Digikam::DMetadata::getIccProfile: Exif color-space tag is sRGB. Using default sRGB ICC profile.
unknown: End Of Image  ( 1 )
Digikam::StackedView::setViewMode: Stacked View Mode :  0
Digikam::ActionThreadBase::setMaximumNumberOfThreads: Using  2  CPU core to run threads
Digikam::ActionThreadBase::run: Action Thread run  1  new jobs
Digikam::ActionThreadBase::slotJobFinished: One job is done
Digikam::ActionThreadBase::cancel: Finish Main Thread
Comment 5 † 2023-08-04 07:25:32 UTC 
Created attachment 160728 [details]
full log #2

One shorter complete log attached. Digikam was already once crashed already and after restart did it very soon again. Only the middle frame of the main window appears to be affected and its possible to add images to iNaturalist plugin window from elsewhere. After crashing the log did scroll adding more events for some time before finishing.
Comment 6 † 2023-08-04 07:30:14 UTC 
+ please remove the log files / outputs after you have analyzed them
Comment 7 † 2023-08-04 07:52:22 UTC 
Created attachment 160730 [details]
crash

And one complete crash...
Comment 8 Maik Qualmann 2023-08-04 07:56:11 UTC 
The messages below, which appear multiple times, are strange and can cause the problem. There drive change events from the Linux kernel. Either a defective hard drive or, in the case of external hard drives, a shaky USB cable could also be considered.
We cannot remove logs or edit posts on this board.

Digikam::DigikamApp::slotSolidDeviceChanged: slotSolidDeviceChanged: "/org/freedesktop/UDisks2/drives/WDC_WD40EZRZ_00GXCB0_WD_WCC7K2CCTPDZ"
Digikam::DigikamApp::slotSolidDeviceChanged: slotSolidDeviceChanged: "/org/freedesktop/UDisks2/block_devices/sdf"
Digikam::CollectionManager::updateLocations: location for "/PATH" is available: true => case sensitivity: 2
Digikam::CollectionManager::updateLocations: location for "/PATH" is available: true => case sensitivity: 2
Digikam::CollectionManager::updateLocations: location for "" is available: false => case sensitivity: 2
Digikam::CollectionManager::updateLocations: location for "/PATH" is available: false => case sensitivity: 2
Digikam::CollectionManager::updateLocations: location for "" is available: false => case sensitivity: 2

Maik
Comment 9 † 2023-08-04 09:14:29 UTC 
Yes, in fact it may be that these problems have occurred only when I have had external drive connected. However these problems seem to occur only in digikam and they have started recently, and I still believe they may be related to inaturalist plugin.
Comment 10 † 2023-08-04 12:50:32 UTC 
No, it just happened without external drive connected. I have no log for this occurrence.
Comment 11 † 2023-08-08 18:44:11 UTC 
What you said earlier is based in wrong assumption as I've hidden data from these logs. These lines appear (correctly) multiple times because they're different locations. They look repeating because I've removed drive names from the logs and look normal in original log. 

It's evident that these problems occur more (nearly constantly) when I work with external drive, but that may be eg. because I have so much data there etc., and as I said earlier I had such occurring also without it connected but after very long time of use. However this started recently and I don't recall this occurring other times than while keeping iNaturalist plugin window open. (Unless it started with 8.1.0 which I updated roughly same time, but I somehow doubt it. This plugin would be more likely cause?)

Here's end of latest error, just the end of log included:

unknown: Start of Image  ( 1 )
unknown: Miscellaneous marker 0xe1, length 13820  ( 1 )
unknown: Miscellaneous marker 0xe1, length 2556  ( 1 )
unknown: Define Quantization Table 0  precision 0  ( 1 )
unknown: Define Quantization Table 1  precision 0  ( 1 )
unknown: Start Of Frame 0xc0: width=3000, height=4000, components=3  ( 1 )
unknown:     Component 1: 1hx2v q=0  ( 1 )
unknown:     Component 2: 1hx1v q=1  ( 1 )
unknown:     Component 3: 1hx1v q=1  ( 1 )
unknown: Define Huffman Table 0x00  ( 1 )
unknown:           0   1   4   3   1   1   1   1  ( 2 )
unknown:           0   0   0   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x10  ( 1 )
unknown:           0   1   3   3   2   4   5   2  ( 2 )
unknown:           4   4   4   6   1   0   2  19  ( 2 )
unknown: Define Huffman Table 0x01  ( 1 )
unknown:           0   3   1   1   1   1   1   0  ( 2 )
unknown:           0   0   0   0   0   0   0   0  ( 2 )
unknown: Define Huffman Table 0x11  ( 1 )
unknown:           0   2   2   2   2   2   2   1  ( 2 )
unknown:           3   4   2   2   1   1   2  15  ( 2 )
unknown: Start Of Scan: 3 components  ( 1 )
unknown:     Component 1: dc=0 ac=0  ( 1 )
unknown:     Component 2: dc=1 ac=1  ( 1 )
unknown:     Component 3: dc=1 ac=1  ( 1 )
unknown:   Ss=0, Se=63, Ah=0, Al=0  ( 1 )
Digikam::DMetadata::getIccProfile: Exif color-space tag is sRGB. Using default sRGB ICC profile.
unknown: End Of Image  ( 1 )
Digikam::TileGrouper::updateClusters: iterating over  142  took  0.00194066  seconds
Digikam::TileGrouper::updateClusters: "created cluster 0: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 1: 8 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 2: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 3: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 4: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 5: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 6: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 7: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 8: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 9: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 10: 8 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 11: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 12: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 13: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 14: 3 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 15: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 16: 5 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 17: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 18: 4 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 19: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 20: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 21: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 22: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 23: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 24: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 25: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 26: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 27: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 28: 3 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 29: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 30: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 31: 3 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 32: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 33: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 34: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 35: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 36: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 37: 2 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 38: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 39: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 40: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 41: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 42: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 43: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 44: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 45: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 46: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 47: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 48: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 49: 1 tiles"
Digikam::TileGrouper::updateClusters: "created cluster 50: 1 tiles"
Digikam::TileGrouper::updateClusters: "level 9: 142 non empty tiles sorted into 51 clusters (142 searched)"
Digikam::StackedView::setViewMode: Stacked View Mode :  1
Digikam::StackedView::setViewMode: Stacked View Mode :  0
Digikam::ItemMarkerTiler::slotSourceModelReset: ----
QtAV::AVPlayerCore::stop: Not playing~
QtAV::AVPlayerCore::stop: Not playing~
QtAV::AVPlayerConfigMngr::Data::save: sync end
Digikam::ActionThreadBase::cancel: Cancel Main Thread
Digikam::ActionThreadBase::cancel: Finish Main Thread
Digikam::ExifToolProcess::terminateExifTool: ExifToolProcess::terminate(): send ExifTool shutdown command...
Digikam::ExifToolProcess::slotFinished: ExifTool process finished with code: 0 and status QProcess::NormalExit
unknown: QThreadStorage: Thread 0x55e77574a440 exited after QThreadStorage 15 destroyed
unknown: QThreadStorage: Thread 0x55e77574a440 exited after QThreadStorage 12 destroyed
unknown: QThreadStorage: Thread 0x55e7756bdb80 exited after QThreadStorage 15 destroyed

Prementioned locations were included just in the beginning (5 times for 5 locations) looking like natural occurences while digikam started.
Comment 12 † 2023-08-08 18:51:23 UTC 
I can do just one upload at time and then restart digikam...
Comment 13 † 2023-08-08 19:01:30 UTC 
Well... now I had it while just browsing pictures at external drive. Didn't yet open the plugin. It may be that it started with 8.1.0 but it does have some relation to external drive to make occurences regular.

Actually: this must have been caused by the bug fix https://bugs.kde.org/show_bug.cgi?id=468593 or what caused that bug in the first place. There's no other explanation! This dealt with same area already.

I try reverting back to 8.0.0 if I find it if it fixes the problem, unless it was there already and the problem wasn't just that what was fixed but only part of it and this larger issue came with 8.0.0 already.
Comment 14 † 2023-08-08 19:05:08 UTC 
Can't find 8.0.0 here https://download.kde.org/Attic/digikam/
Comment 15 Maik Qualmann 2023-08-08 19:40:29 UTC 
Bug 468593 has nothing to do with your problem, the fix restores the thumbnail bar as it was all those years ago.
Do you use Wayland?

Maik
Comment 16 † 2023-08-08 20:42:56 UTC 
No, I switched to xfce because of earlier bug and stayed with it.
Comment 17 caulier.gilles 2023-08-08 22:42:20 UTC 
8.0.0 ==> https://download.kde.org/stable/digikam/8.0.0/
Comment 18 † 2023-08-09 12:31:27 UTC 
So far 8.0.0 has been running fine, will continue testing.
Comment 19 † 2023-09-07 19:19:36 UTC 
I'm inclined to say this appears to affect 8.1.0 but not 8.0.0. 

There was long while without any problems (using 8.1.0 only) but now I got 8.1.0 doing this very quickly and constantly (three times) after restarts, but using 8.0.0 every time in between not (three times slightly longer sessions). What I was doing was transferring files from internal hard disk to USB connected drive and rather soon after this error appeared - I'm unsure if this particular action is relevant to this display bug. However I also got one immediate crash after start with 8.0.0 too (program closed) but I haven't single time been able to get this particular bug appear with that version.

So it looks like thumbnail view partially becomes visible but some sort of preview layer stays hanging around but positioned to up at centre frame. All processes will continue normally (like searching new files) if they were running but the window/UI is unresponsive.
Comment 20 † 2023-09-08 17:06:10 UTC 
Problems started again immediately today with 8.1.0, no USB drive attached.
Comment 21 caulier.gilles 2023-10-11 03:52:45 UTC 
Such A Shame,

What's about this file using current 8.2.0 AppImage Linux bundle ? It's
reproducible ?

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier
Comment 22 Antti Leppänen 2023-11-25 14:27:08 UTC 
I am also having this problem with 8.1.0 AppImage without using the iNaturalist plugin.
Comment 23 caulier.gilles 2023-11-25 15:57:59 UTC 
Please try to reproduce the problem with the current digiKam AppImage 8.2.0 pre-release, where we close more than 20 bugs. This version is near of the final release, you can use it safety. File is here :

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier
Comment 24 Maik Qualmann 2024-01-07 09:31:07 UTC 
Git commit 581acb950c8e10a607571853694141a3bd40cdbe by Maik Qualmann.
Committed on 07/01/2024 at 10:26.
Pushed by mqualmann into branch 'master'.

add digiKam setting to force use of software OpenGL rendering
Related: bug 479455, bug 476092, bug 468980, bug 446511, bug 446729

M  +5    -4    core/app/main/main.cpp
M  +15   -0    core/showfoto/main/main.cpp
M  +2    -0    core/utilities/setup/misc/systemsettings.cpp
M  +1    -0    core/utilities/setup/misc/systemsettings.h
M  +5    -0    core/utilities/setup/misc/systemsettingswidget.cpp

https://invent.kde.org/graphics/digikam/-/commit/581acb950c8e10a607571853694141a3bd40cdbe
Comment 25 caulier.gilles 2024-04-12 00:28:01 UTC 
Hi all, 

What's about this file using current 8.4.0 AppImage Linux bundle ? It's reproducible ?

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier
Comment 26 caulier.gilles 2024-04-20 03:23:01 UTC 
Hi all,

The digiKam 8.4.0 Appimage bundle pre-release is now based on last modern frameworks Qt 6.7.0 and KDE 6.2.0.

File can be downloaded at usual place : https://files.kde.org/digikam/
Take a  care : the bundle is named with the suffix "-Qt6" not "-Qt5". This bundle is compiled under Ubuntu 22.04 and require a Linux with GlibC version >= 2.35 to run.

Can you reproduce the dysfonction with this version?

Thanks in advance

Gilles Caulier
Comment 27 † 2024-08-19 17:34:23 UTC 
Thanks, this was fixed already. "Funnily" 8.4.0 again occasionally started to do similar blinking but immediately normalizes and doesn't freeze the view.