Bug 340649

Summary:	digiKam doesn't show thumbnails in preview on my Canon 450D (PTP)
Product:	[Applications] digikam	Reporter:	boombaxer
Component:	Import-Gphoto2	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	major	CC:	alex, caulier.gilles, tpr
Priority:	NOR
Version:	4.4.0
Target Milestone:	---
Platform:	Debian unstable
OS:	Linux
Latest Commit:		Version Fixed In:	7.3.0
Sentry Crash Report:

Description boombaxer 2014-11-04 21:16:17 UTC

Digikam doesn't show thumbnails in preview on my Canon 450D (PTP).

I can see those messages in console:
digikam(4365)/digikam (core) Digikam::DigikamApp::checkSolidCamera: Solid returns unsupported driver handle for gphoto2
digikam(4365)/digikam (core) Digikam::ImportStackedView::syncSelection: one or both of the models are null?! from: Digikam::ImportIconView(0x76ef100) to: Digikam::ImportThumbnailBar(0x7722130)

gphoto2 grabs thumbnails without any problem:
gphoto2 --get-all-thumbnails
Downloading 'IMG_4081.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4081.jpg
Downloading 'IMG_4082.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4082.jpg
Downloading 'IMG_4083.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4083.jpg
Downloading 'IMG_4084.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4084.jpg
Downloading 'IMG_4085.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4085.jpg
Downloading 'IMG_4086.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4086.jpg
Downloading 'IMG_4087.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4087.jpg
Downloading 'IMG_4088.JPG' from folder '/store_00020001/DCIM/100CANON'...
Saving file as thumb_IMG_4088.jpg

gtkam shows thumbnails

I know libgphoto2 had the bug with thumbnails on PTP cameras but now I believe it is fixed and I have bug exactly with Digikam.

Reproducible: Always

Comment 1 Teemu Rytilahti 2014-11-15 16:52:04 UTC

Could you verify if the bug still exists with Digikam 4.5 (when that gets released)? This is probably a dupe of 338407.

*** This bug has been marked as a duplicate of bug 338407 ***

Comment 2 Alex Loes 2014-11-25 19:11:26 UTC

I have a Canon EOS400D and this problem still exists. The terminal shows:
digikam(6589)/digikam (core) Digikam::DigikamApp::checkSolidCamera: Solid returns unsupported driver handle for gphoto2 
digikam(6589)/digikam (core) Digikam::DigikamApp::checkSolidCamera: Solid returns unsupported driver handle for gphoto2 
digikam(6589)/digikam (core) Digikam::ImportStackedView::syncSelection: one or both of the models are null?! from: Digikam::ImportIconView(0xd8c4b50) to: Digikam::ImportThumbnailBar(0xd801910)

Comment 3 caulier.gilles 2021-04-04 09:41:51 UTC

Fixed with #338407