http://bugzilla.kernel.org/show_bug.cgi?id=13817
Summary: video output scrambled with KMS on i915
Product: Drivers
Version: 2.5
Kernel Version: 2.6.31-rc3
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI)
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: Yes
Created an attachment (id=22468)
--> (http://bugzilla.kernel.org/attachment.cgi?id=22468)
video of my screen while moving a terminal
When using KMS, the console is occasionally scrambled (like a shadow image
appearing and disappearing very quickly). It is even more visible when X is
started, as moving any window can trigger the bug and renders the screen
completely unreadable (I recorded a (admittedly really lousy) video with my
phone in case the description is not good enough).
I bisected the problem and the problem started with commit
7662c8bd6545c12ac7b2b39e4554c3ba34789c50 (drm/i915: add FIFO watermark
support), which appeared in Linus's tree between 2.6.31-rc2 and 2.6.31-rc3.
I have _not_ tried to revert just this patch (as I have no clue whether
following patches depend on it or not), but I'm open to try any patch (as time
permits, it's my work machine too).
Thanks,
Matthieu
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