Bug 514106

Summary: intel flickers badly on screen updates
Product: [Fedora] Fedora Reporter: Bill Nottingham <notting>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: itamar, jfeeney, kernel-maint, krh, rvokal, wtogami
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Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2009-08-04 02:08:14 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Bill Nottingham 2009-07-28 02:32:00 UTC 
Description of problem:

Upon booting the rawhide kernel, I have a perfectly stable X image... as long as the screen is not updating. On any update, the image jumps about 500 pixels to the right for a tenth of second before snapping back. It's pretty trippy.

Version-Release number of selected component (if applicable):

xorg-x11-server-Xorg-1.6.1.901-1.fc11.x86_64
xorg-x11-drv-intel-2.7.0-7.fc11.x86_64
kernel-2.6.31-0.94.rc4.fc12.x86_64

How reproducible:

Once is enough

Steps to Reproduce:
1. Install new kernel.
2. Reboot.
  
Actual results:

Chaos on any screen updates.

Expected results:

Happy X.

Additional info:

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)

[notting@nostromo: ~]$ xrandr 
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 4096 x 4096
VGA1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1400x1050+0+0 (normal left inverted right x axis y axis) 287mm x 215mm
   1400x1050      60.0*+   50.0  
DVI1 disconnected (normal left inverted right x axis y axis)
Comment 1 Matthew Garrett 2009-07-28 02:47:05 UTC 
Hmm. This was just before I added the PM code, so I think this is Kristian's problem rather than mine.
Comment 2 Bill Nottingham 2009-07-28 14:37:24 UTC 
Backing down to 2.6.30-6.fc12 works. Haven't tried anything else in between yet.
Comment 3 Bill Nottingham 2009-08-03 16:36:47 UTC 
*** Bug 514985 has been marked as a duplicate of this bug. ***
Comment 4 Bill Nottingham 2009-08-03 16:38:03 UTC 
Persists in .118.
Comment 5 Warren Togami 2009-08-03 16:44:26 UTC 
krh suggested that this could be an issue with the "fifo watermark" that Jesse Barnes @ Intel is trying to fix.
Comment 6 Adam Jackson 2009-08-03 19:08:25 UTC 
kernel-2.6.31-0.123.rc5.git2.fc12 or later includes jesse's watermark fixes.  Give that a try?
Comment 7 Bill Nottingham 2009-08-04 02:08:14 UTC 
0.122.rc5 WFM.