OK, so I tested the removal of the items requested (still with BIOS set
to fixed). After
> sudo apt remove mesa-va-drivers
I tried running the video in totem. Same problem as before - random
lags/stutters/freezes, usually < 1 second, but a few that were longer
(longest was about 2.5 seconds this time around).
So then I tried
> sudo apt remove i965-va-driver
then ran the video in totem. If anything, the problem became worse - the
lags were more prevalent, and the longest was > 3 seconds.
So I went back to mpv and ran the video there. There were minor stutters
(not long enough to call them lags - I would estimate they were mostly <
0.25 seconds) scattered through the video at random, but none long
enough to really cause me to say "this is unwatchable". However, I did
notice increased CPU usage - the system became noticably warmer to the
touch while the video was playing, and the fan kicked on high to cool it
(previous instances I didn't notice the fan kicking on - perhaps it did,
and I just didn't notice it. I have copied below the terminal output for
mpv, in case any of it is relevant (I didn't notice much different than
the past - just a warning about a decoder not supporting hardware). I
can re-run and see if I can catch a lag long enough for me to start
dmesg if you like. Just let me know what would help you most from this
point.
tracy@tracy-hp:/mnt/VM$ mpv bbb_sunflower_1080p_60fps_normal.mp4
Playing: bbb_sunflower_1080p_60fps_normal.mp4
(+) Video --vid=1 (*) (h264 1920x1080 60.000fps)
(+) Audio --aid=1 --alang=und (*) (mp3 2ch 48000Hz)
Audio --aid=2 --alang=und (*) (ac3 6ch 48000Hz)
File tags:
Artist: Blender Foundation 2008, Janus Bager Kristensen 2013
Comment: Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
Composer: Sacha Goedegebure
Genre: Animation
Title: Big Buck Bunny, Sunflower version
VO does not support requested hardware decoder, or loading it failed.
AO: [pulse] 48000Hz stereo 2ch s16
VO: [opengl] 1920x1080 yuv420p
AV: 00:10:34 / 00:10:34 (100%) A-V: 0.000
Exiting... (End of file)
Also, should I reinstall the i965 and mesa drivers, or leave them
uninstalled for further testing? (I will definitely leave them
uninstalled until I hear otherwise, or for a day or so at any rate...)
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https://bugs.launchpad.net/bugs/1774915
Title:
Video freezes and stutters when using totem (audio continues fine)
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