Bug 36240 - [945GM] acceleration performance degraded
Summary: [945GM] acceleration performance degraded
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Chris Wilson
QA Contact: Xorg Project Team
Keywords: NEEDINFO
Depends on:
Reported: 2011-04-14 12:21 UTC by Misha Shnurapet
Modified: 2011-11-09 12:04 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Xorg.0.log (69.30 KB, text/plain)
2011-04-14 12:21 UTC, Misha Shnurapet
no flags Details
dmesg output (98.20 KB, text/plain)
2011-04-14 12:22 UTC, Misha Shnurapet
no flags Details
xrandr --verbose (2.00 KB, application/octet-stream)
2011-04-14 12:23 UTC, Misha Shnurapet
no flags Details
intel_reg_dumper output (10.93 KB, text/plain)
2011-04-14 12:24 UTC, Misha Shnurapet
no flags Details
VBIOS dump (64.00 KB, text/plain)
2011-04-14 12:25 UTC, Misha Shnurapet
no flags Details
glxinfo (11.02 KB, text/plain)
2011-04-14 12:25 UTC, Misha Shnurapet
no flags Details

Description Misha Shnurapet 2011-04-14 12:21:44 UTC
Created attachment 45623 [details]

Bug description:
I used to play 720p videos with compiz enabled on a large Sony BRAVIA TV screen (1280x720) via VGA cable with Fedora 12, but with Fedora 14 I have to shut off all desktop effects to make playback smooth. The difference can also be seen on the laptop display if rotating the 3D cube.

System environment: 
-- chipset: Intel 945GSE UMA
-- system architecture: 32-bit (i686)
-- xf86-video-intel: 2.12.0
-- xserver: 1.9.5
-- mesa: 7.9
-- libdrm: 2.4.24
-- kernel:
-- Linux distribution: Fedora 14
-- Machine or mobo model: Dell Inspiron mini 10v (1011)
-- Display connector: VGA

Reproducing steps:
1. Play a 720p video with compiz enabled on Dell mini 10v with Fedora 12 and Fedora 14 (mplayer -vo xv)
1. Turn on compiz and try rotating the 3D cube on Dell mini 10v with F14 to see the picture freezing slightly

Additional info: I ran glxgears and saw that FPS goes down to 30 some with compiz enabled.
Comment 1 Misha Shnurapet 2011-04-14 12:22:58 UTC
Created attachment 45624 [details]
dmesg output
Comment 2 Misha Shnurapet 2011-04-14 12:23:42 UTC
Created attachment 45625 [details]
xrandr --verbose
Comment 3 Misha Shnurapet 2011-04-14 12:24:13 UTC
Created attachment 45626 [details]
intel_reg_dumper output
Comment 4 Misha Shnurapet 2011-04-14 12:25:02 UTC
Created attachment 45627 [details]
VBIOS dump
Comment 5 Misha Shnurapet 2011-04-14 12:25:49 UTC
Created attachment 45628 [details]
Comment 6 Chris Wilson 2011-06-27 10:52:26 UTC
The difficulty I have here is that your are comparing apples to oranges and declaring one is better than the other.

If you were to use the current driver with the old desktop, how does it compare then?
Comment 7 Chris Wilson 2011-11-09 12:04:58 UTC
The description makes me believe that the Tripple Buffering introduced in 2.15.0 will alleviate the symptoms.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.