Bug 11690

Summary: i915: DRI makes XVideo slow
Product: xorg Reporter: Martin von Gagern <Martin.vGagern>
Component: Driver/intelAssignee: Eric Anholt <eric>
Status: RESOLVED WORKSFORME QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: 7.2 (2007.02)   
Hardware: Other   
OS: All   
URL: http://bugs.gentoo.org/show_bug.cgi?id=177420
Whiteboard:
i915 platform: i915 features:
Bug Depends on:    
Bug Blocks: 13027    
Attachments:
Description Flags
xorg.conf
none
Xorg.log none

Description Martin von Gagern 2007-07-22 16:29:37 UTC
I have an Intel i915 chip on my motherboard. When I use an current intel (i810) driver with version 2.0.0 or 2.1.0, then applications displaying video using XVideo become extremely slow, displaying only a few frames per second. This can be resolved by either disabling DRI or downgrading to driver version 1.7.4.

I first reported this as a Gentoo bug: http://bugs.gentoo.org/177420
Comment 1 Erik Andren 2007-07-23 04:45:35 UTC
Please post (not pasting) your xorg.conf and your xorg.log 
Comment 2 Martin von Gagern 2007-07-23 08:32:11 UTC
Created attachment 10841 [details]
xorg.conf
Comment 3 Martin von Gagern 2007-07-23 08:34:15 UTC
Created attachment 10842 [details]
Xorg.log
Comment 4 Martin von Gagern 2007-09-27 01:35:27 UTC
Still an issue with driver 2.1.1. This is the same machine on which I experience bug 12542, so maybe they are related even when I see no connection.
Comment 5 Jesse Barnes 2007-10-31 14:36:24 UTC
This may actually be a kernel DRM bug.  Can you try a recent kernel and Mesa release?
Comment 6 Antti Mäkelä 2007-11-02 06:59:27 UTC
I remember having same kinds of symptoms - I remember fixing *some* issue by switching to EXA. So try putting AccelMethod EXA to your xorg.conf and check if it helps.

Just a thought.
Comment 7 Michael Fu 2007-11-05 17:11:33 UTC
Martin, we resolved several Xvideo related bugs.e.g. bug# 12243, bug# 11186, etc. please re-test with the git tip to see if it resolved your issue. Also, Antti suggested in comment# 6 is also very true. Please use EXA. thanks.
Comment 8 Gordon Jin 2007-12-03 22:21:44 UTC
I'm closing. Please reopen if you still see this problem in the latest driver (2.2 release or git) which has turned EXA on by default.

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