Bug 55851 - [i915 ] Screen corruption with 3.6
Summary: [i915 ] Screen corruption with 3.6
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: medium normal
Assignee: Daniel Vetter
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Reported: 2012-10-10 19:42 UTC by holger
Modified: 2017-07-24 23:00 UTC (History)
4 users (show)

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i915 platform:
i915 features:

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Description holger 2012-10-10 19:42:14 UTC 
I have an Acer Aspire S3 laptop (Ivybridge i7).

1.) insmod i915
2.) On boot and the screen starts to flicker
3.) Once GDM starts the color is wrong and the screen is shifted.
4.) After suspend/resume it is fine.

I have reverted the kernel commit: 'c02a29650148f353b0fc86b7eba3f99ecafd23dd' and it is fixing the flickering for me.
Comment 1 Daniel Vetter 2012-10-10 20:45:24 UTC 
Should be fixed with

commit 0c96c65b48fba3ffe9822a554cbc0cd610765cd5
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Wed Sep 26 18:43:10 2012 +0300

    drm/i915: use adjusted_mode instead of mode for checking the 6bpc force flag

This commit is marked for backporting to stable kernels and should show up there in one of the next releases. Since all other regressions due to the commit you cite have been fixed by this I'll close this one, thanks for reporting.

If you issue is not fixed, please reopen and attach complete dmesg with drm.debug=0xe added to your kernel cmdline.

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