http://bugzilla.kernel.org/show_bug.cgi?id=15293
Summary: Flash video laggy inside Firefox only with KMS
Product: Drivers
Version: 2.5
Kernel Version: 2.6.33-rc7
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
AssignedTo: drivers_video-...@kernel-bugs.osdl.org
ReportedBy: ne...@o2.pl
Regression: Yes
System specs:
Arch Linux (20100212) x86_64
Lenovo U330 with Radeon 3450 and Intel 4500MHD
Kernel: 2.6.33-rc7 vanilla
KDE SC 4.4 (from KDEmod)
mesa: git 20100212
libdrm: git 20100212
xf86-video-ati: git 20100212
xf86-video-intel: git 20100212
flashplugin: 10.0.45.2 x86_64
Firefox 3.6
Running radeon KMS and intel KMS (switchable graphics).
I know it's hard to debug problems with closed-source things, but I guess there
is a regression in KMS code regarding video playback in flashplugin. It happens
for many flash video players, but not all (doesn't happen for youtube)
For example:
http://vimeo.com/6194911
I've got laggy in-flash video buttons, the playback is skippy, I have one core
maxed-out. Firefox is also laggy, RMS context-menu takes 2-3 seconds to open.
When I switch to full screen mode, everything is fine and dandy: playback is
smooth, flash video control buttons work. This seems like an issue with video
rendering inside other windows.
It doesn't happen for Intel KMS or the same radeon driver working in UMS.
Happens regardless of compositing on/off.
I'm not the only one with this problem:
http://bbs.archlinux.org/viewtopic.php?pid=707955#p707955
I don't know if I posted this regression into the right bugtracker. I thought
since this issue arises only in KMS and not UMS, it's a kernel module problem.
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