Michi thanks for the feedback. Hopefully it will help me determine the root cause of the strang behaviour.
> I'm pretty sure that there is nothing wrong with extraction from ogg files Agreed. > So, I'm wondering whether what you are seeing is simply due to the fact that a lot of files are added at once, and it simply takes quite a while to fetch the thumbnails for all of them? Indeed possible. I wondering if the large number (and possibly large size) was indirectly the cause. Possible one of the many an varied OGGs I have cause a thumbnailer crash or hang. I will investigate this later. What is strange is that I previously I had no thumbnails on OGGs and a high proportion of thumbnails on the few MPs I have. I did a) Cleared the thumbnailer failure cache b) removed the whole thumbnail cache directory c) Removed and reinsterted the SD card d) Uninstallled and reinstalled the core Music app After each change I gave the music app/thumbnailer a day or two to get more thumbnails, scrolled about a lot, open and closed the music app. The convergent result at the end was always the same files (MPs) having thumbnails! I will continue to investigate. Please do not feel you need to spend more time looking at test cases, it looks like the problem is related to my special circumstances. I'm think of writing a patch for the music app so it understand a kind of .nomedia tag file so that it does not include my audio book library in my music library! -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to thumbnailer in Ubuntu. https://bugs.launchpad.net/bugs/1512608 Title: No thumbnails generated for OGG audio Status in thumbnailer package in Ubuntu: New Bug description: Setup: Core Music app BQ HD5 OTA-7 15.04 r6 Large collection of audio files in .ogg and .mp3 format on SD card Audio files tagged with Artist, Album titile, Track title etc. Expected result: Album covers and Artist images are displayed in Music app Actual result: Only mp3 audio files generate thumbnails. No Album of Artist thumbnails are generated for any OGG files To test the situation I have a) Cleared the thumbnailer failure cache b) removed the whole thumbnail cache directory c) Removed and reinsterted the SD card d) Uninstallled and reinstalled the core Music app Before the OTA-7 upgrade the thumbnails were shown for .ogg and .mp3 files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thumbnailer/+bug/1512608/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp