Bug 514985

Summary: intel 945 KMS horizontal flipping glitch
Product: [Fedora] Fedora Reporter: Warren Togami <wtogami>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: bnocera, itamar, kernel-maint, notting, xgl-maint
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2009-08-03 12:36:47 EDT Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 473303    

Description Warren Togami 2009-07-31 14:45:16 EDT
http://people.redhat.com/wtogami/temp/intel-945-horz-render-glitch.mov

I noticed during early July while trying a rawhide LiveCD that the display was behaving very strangely like in the above video.  During certain render operations, everything on the screen would "flip" horizontally in an annoying fashion.

* This happens during KMS boot while text flies by, before X has run.
* This happens while X is running.
* It happens continuously if you run gnome-terminal and have text fly by in your terminal.  As long as the text is moving, the entire screen exhibits this glitch.

It is impossible to upgrade my laptop to rawhide while this bug exists.

kernel-2.6.31-0.112.rc4.git3.fc12 (both i686 and x86_64 effected)
xorg-x11-drv-intel-2.8.0-2.fc12
libdrm-2.4.12-0.6.fc12
Comment 1 Warren Togami 2009-07-31 14:47:02 EDT
krh mentioned that the "fifo watermark" work might be related to this.
Comment 2 Bill Nottingham 2009-08-03 12:36:47 EDT

*** This bug has been marked as a duplicate of bug 514106 ***