http://bugzilla.kernel.org/show_bug.cgi?id=12900
Summary: [intel 855GM] problems with tiled output in various
circumstances
Product: Drivers
Version: 2.5
KernelVersion: 2.6.29-rc8
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI)
AssignedTo: drivers_video-...@kernel-bugs.osdl.org
ReportedBy: dan...@ffwll.ch
CC: jbar...@virtuousgeek.org
Latest working kernel version: 2.6.29-rc3
Distribution: debian unstable
Hardware Environment: IBM X40 Latop
Problem Description:
In short: When using kms, glxgears is strangely tiled. When _not_ using kms,
all the output (save the X cursor) of the 2d ddx is strangely tiled (if the ddx
is new enough to support tiling). For the details, see my original bug report
on the 2d intel ddx at
https://bugs.freedesktop.org/show_bug.cgi?id=20289
After some testing it looks like the kernel is the culprit. For tracking down
the exact commit with bisecting my userspace env was:
xf86-video-intel: xf86-video-intel-2.4.97.0-369-gd9dbdb3 (using git describe)
xorg: 1.6 rc from debian experimental
libdrm: libdrm-2.4.5-41-g82eac80
According to my bisect-run, the breakage was introduced in the following
commit:
commit 0f973f27888e4664b253ab2cf69c67c2eb80ab1b
Author: Jesse Barnes <jbar...@virtuousgeek.org>
Date: Mon Jan 26 17:10:45 2009 -0800
drm/i915: add fence register management to execbuf
I've tried to revert this on top of 2.6.29-rc8, but this failed due to merge
conflicts.
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