Bug 28382 - Dithering regression on Intel graphics with .38 kernels
Summary: Dithering regression on Intel graphics with .38 kernels
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - Intel) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_video-dri-intel@kernel-bugs.osdl.org
URL: https://bugs.launchpad.net/ubuntu/+so...
Keywords:
Depends on:
Blocks:
 
Reported: 2011-02-06 16:01 UTC by Eric Appleman
Modified: 2011-02-06 16:05 UTC (History)
1 user (show)

See Also:
Kernel Version:
Subsystem:
Regression: No
Bisected commit-id:

Attachments
Notice the distinct color bands on the background (80.10 KB, image/jpeg)
2011-02-06 16:05 UTC, Eric Appleman 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Eric Appleman 2011-02-06 16:01:07 UTC 
When using the 2.6.38-rc kernels, there is session-wide color banding where gradients would otherwise appear.
Comment 1 Eric Appleman 2011-02-06 16:02:17 UTC 
See launchpad entry for logs.
Comment 2 Chris Wilson 2011-02-06 16:04:10 UTC 
commit 72389a33b8878e6091f7ab8080f5ed07054c7c39
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sun Feb 6 15:50:52 2011 +0000

    drm/i915/lvds: Restore dithering on native modes for gen2/3
    
    A regression introduced in bee17e5 cleared the dithering bit for native
    modes on gen2/3.
    
    Bugzilla: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/711568
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Comment 3 Eric Appleman 2011-02-06 16:05:11 UTC 
Created attachment 46622 [details]
Notice the distinct color bands on the background
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