Bug 32568 - [SNB regression] compiz causes a display mess
Summary: [SNB regression] compiz causes a display mess
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: Other Linux (All)
: high major
Assignee: Wang Zhenyu
QA Contact:
Depends on:
Reported: 2010-12-21 22:47 UTC by Yi Sun
Modified: 2010-12-23 18:17 UTC (History)
4 users (show)

See Also:
i915 platform:
i915 features:

the messed display (466.29 KB, image/x-png)
2010-12-21 22:48 UTC, Yi Sun

Description Yi Sun 2010-12-21 22:47:43 UTC
System Environment:
Kernel_version: (drm-intel-next)5909a77ac62cc042f94bd262016cf468a2f96022
Libdrm:         (master)2.4.23
Mesa:           (master)cd9ed3da684d8cce845730f23b0ce74890e09262
Xserver:        (server-1.9-branch)xorg-server-
Xf86_video_intel: (master)2.13.902-1-g71af40a75fbdd1054b1111e8cbe67ad1f97e6613

Bug detailed description:
Start the gnome with the compiz, the display is messed. So long as we killed the compiz, the display returns to normal.
There isn't the issue on the Ironlake platform.
Comment 1 Yi Sun 2010-12-21 22:48:37 UTC
Created attachment 41358 [details]
the messed display
Comment 2 Gordon Jin 2010-12-21 22:57:42 UTC
how about drm-intel-fixes and mesa 7.10 branch?
Comment 3 Wang Zhenyu 2010-12-21 23:01:55 UTC
This doesn't happen to me here. 

Should already be fixed by
commit 4fe78d3e12fa963273de4d83b1fd55a78a5d41bf
Author: Eric Anholt <eric@anholt.net>
Date:   Tue Dec 21 13:04:07 2010 -0800

    i965: Avoid using float type for raw moves, to work around SNB issue.
    The SNB alt-mode math does the denorm and inf reduction even for a
    "raw MOV" like we do for g0 message header setup, where we are moving
    values that aren't actually floats.  Just use UD type, where raw MOVs
    really are raw MOVs.
    Fixes glxgears since c52adfc2e1d130effea940e75690897eb5d3ceaa, but no
    piglit tests had regressed(!)
Comment 4 Wang Zhenyu 2010-12-23 17:43:09 UTC
Reopen if you still had issue.
Comment 5 Yi Sun 2010-12-23 18:17:02 UTC
The issue is gone,so verified it.

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