Public bug reported:
Ubuntu 9.10 was booted up without installing it, but it should not make
a difference for this bug.
I've started playing a 720p James Bond .mkv movie from the HDD, and it
went smoothly, until i wondered about the CPU load and started the
"system monitor" from the system -> administratino menu. While sys. mon.
was starting, there was a short (~0.5s) system-wide pause and as soon as
system resumed functioning, movie playback started being choppy. CPU
loads were normal, all below 50%. (CPU is Core 2 Quad 2.66Ghz, GeForce
8800 GTX, open source NV driver). This happens in 5 out 6 attempts to
reproduce.
I've tried the folowing workarounds, each from the moment it started to
being choppy:
* closing the system monitor - did NOT help
* pressed pause and resume - did NOT help, made the choppyness even worse
* closing the system mon., closing and starting totem player again - issue
gone, playback smooth
* closing and starting gstreamer while sys. mon. was running - issue gone,
playback smooth
>From what i can tell, this seems to be an issue with totem player /
gstreamer not being able to recover gracefully after frames have been
lost due to a system stall, since pausing and unpausing made things even
worse.
If you (totem developer) need help with testing a patch, providing more
info and helping to fix this bug, i'm available via e-mail.
ps. .mkv movie in case was
"Quantum.of.Solace.2008.720p.BluRay.DTS.x264-DON.mkv"
ProblemType: Bug
Architecture: amd64
Date: Sun Nov 22 03:27:41 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/totem
LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027.1)
Package: libgstreamer0.10-0 0.10.25-2
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: gstreamer0.10
Uname: Linux 2.6.31-14-generic x86_64
** Affects: gstreamer0.10 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
totem playback starts being choppy after "system monitor" has been started
while watching a movie
https://bugs.launchpad.net/bugs/486543
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