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SubjectRe: [Intel-gfx] [bisected] i915: linux-2.6.32-rc3+ regression
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On Sat, 2009-10-10 at 21:37 +0300, Sergei Trofimovich wrote: 
> Hi!
>
> After syncing git tree to bd381934bf13ccb1af2813ae26c6fe00ec85d254
> I've experienced pixel color corruption in Xorg.
> Some of pixels (not all) have abnormal colors seen on images like this:
> http://trofimeus.narod.ru/2009-10-09-22-00-17.png [1.5M]
> (you won't see any problem until you run -rc3+ kernel).
>
> I've bisected it[2] and found offending commit[1].
> My hardware is HP Compaq 2510p laptop:
> 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
>
> Do you need more info?
>
> Thanks!
>
> [1] offending commit
> > 068143d38804825d59d951a192cfadd2e22f457d is the first bad commit
> > commit 068143d38804825d59d951a192cfadd2e22f457d
> > Author: Dave Airlie <airlied@redhat.com>
> > Date: Mon Oct 5 09:58:02 2009 +1000
> >
> > drm/fb: add setcmap and fix 8-bit support.
> >
> > This adds support for the setcmap api and fixes the 8bpp
> > support at least on radeon hardware. It adds a new load_lut
> > hook which can be called once the color map is setup.
> >
> > Signed-off-by: Dave Airlie <airlied@redhat.com>
>
> [2] bisect log:
> :040000 040000 9334e1ee9d528eaa5babd419bd53b40417e65f0f 7e06eb50488482efd38ac243080c9f27ee8682ec M drivers
> :040000 040000 31c8cb95831669746c0ee2ff8e34d15dc6c49b0e 0523107fc14ca0bb6914b93ea56dab20c741d61c M include
> git bisect start
> # bad: [bd381934bf13ccb1af2813ae26c6fe00ec85d254] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rol
> and/infiniband
> git bisect bad bd381934bf13ccb1af2813ae26c6fe00ec85d254
> # good: [374576a8b6f865022c0fd1ca62396889b23d66dd] Linux 2.6.32-rc3
> git bisect good 374576a8b6f865022c0fd1ca62396889b23d66dd
> # bad: [1c6e6d91b22c4271e8a5dab559a08cb005a77073] Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/air
> lied/drm-2.6
> git bisect bad 1c6e6d91b22c4271e8a5dab559a08cb005a77073
> # good: [d8e7b2b3ac5319fcee616488c628c2bbe7e2937b] Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/ke
> rnel/git/tmlind/linux-omap-2.6
> git bisect good d8e7b2b3ac5319fcee616488c628c2bbe7e2937b
> # good: [185974dd596e67e73906790c2a4a4579d75911e6] drm: Delete the DRM_DEBUG_KMS in drm_mode_cursor_ioctl
> git bisect good 185974dd596e67e73906790c2a4a4579d75911e6
> # bad: [01ceae8edd7a0a6d8588dc103ad9f55e2c52cae9] drm/radeon/kms: Fix RS600/RV515/R520/RS690 IRQ
> git bisect bad 01ceae8edd7a0a6d8588dc103ad9f55e2c52cae9
> # bad: [b8c00ac5b50b54491657f8b6740db1df50149944] drm/fb: add more correct 8/16/24/32 bpp fb support.
> git bisect bad b8c00ac5b50b54491657f8b6740db1df50149944
> # bad: [068143d38804825d59d951a192cfadd2e22f457d] drm/fb: add setcmap and fix 8-bit support.
> git bisect bad 068143d38804825d59d951a192cfadd2e22f457d
> # good: [dfee5614e4d83a32cef9193a8b19bc1d8900f93d] drm/radeon/kms: respect single crtc cards, only create one crtc. (v2)
> git bisect good dfee5614e4d83a32cef9193a8b19bc1d8900f93d
>
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx


I found that today too.
I had filled a bugreport.
https://bugs.freedesktop.org/show_bug.cgi?id=24444


Same commit is responsible.

Best regards,
Maxim Levitsky



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