SUMMARY After yesterday big update to plasma6 there is no more audio and video play preview at information panel. STEPS TO REPRODUCE 1. Update to latest kde neon 2. Choose mp3 or mp4 file in Dolphin and try to click play button at info side-panel 3. Nothing happens, and timeline control in preview area are grayed (like «function inaccessible for now») EXPECTED RESULT Play of audio/video file in small preview area in info panel. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Neon Latest KDE Plasma Version: 6 KDE Frameworks Version: 6 Qt Version: 6 ADDITIONAL INFORMATION When start Dolphin from Konsole, I've got many lines of warnings like this: ``` kf.kio.core: An error occurred during write. The worker terminates now. WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded WARNING: Phonon::createPath: Cannot connect Phonon::MediaObject ( no objectName ) to EmbeddedVideoPlayer ( no objectName ). WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded WARNING: Phonon::createPath: Cannot connect Phonon::MediaObject ( no objectName ) to Phonon::AudioOutput ( no objectName ). ``` Those messages generated when I've clicked on audio or video files in directory. Before yesterday big update all worked fine. Maybe, during update, when Discover audo-deleted 2-3 dozens of packages — it didn't install package or plugin for this function of media-preview? Maybe I need to install something else? I've installed manually `pkcon install phonon-backend-gstreamer` but nothing changed, it didn't help.
Previews with info panel work on Arch Linux running Plasma 6. Possibly it's a neon packing issue.
*** Bug 482093 has been marked as a duplicate of this bug. ***
Please update KDE Neon and test again. There was an issue with some phonon backend packages missing that should be fixed now
I can reproduce on neon unstable even after installing all available updates a few hours ago.
I'm on Neon User, installed all updates available at this moment. At first glance it is solved, video and audio files in different formats and codecs now play as before. The problem is that another "bug" was introduced, maybe? And it crashes Dolphin. If I select a mkv file that contains video of resolution 720p or above playing in the panel and move the cursor and select another similar file, instead of stopping playing the video and switching to preview the new selected file Dolphin just crashes immediatelly. Tested with a bunch of 480p videos and they didn't crash. Tested on Wayland. Linux/KDE Plasma: Neon KDE Plasma Version: 6.0.0 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 GPU: Skylake iGP
(In reply to Nicolas Fella from comment #3) > Please update KDE Neon and test again. There was an issue with some phonon > backend packages missing that should be fixed now Update one hour ago my kde neon and now all play-preview on info panel in Dolphin works as expected (as before this bug introduced). Thanks very much to developers!
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
If I may, this bug is totally solved for some time already.