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SubjectRe: Regression DRM/i915/KMS: VGA connector unusable after 2.6.31-rc8-git1, DVI connector ok
cc'ing the intel-gfx list.

On Wed, 09 Sep 2009 00:19:04 +0200
Knut Petersen <Knut_Petersen@t-online.de> wrote:

> Hi everybody!
>
> During the release cycle of the 2.6.31-rc* kernels KMS started to work
> on my computer.
>
> Booting with a monitor attached to both the VAG and the DVI
> connectors, kernel 2.6.31-rc8-git1
> detects both monitors correctly and sets the native video mode.
>
> Booting the same configuration with kernel 2.6.31-rc8-git2 ...
> -rc9-git1 gives a different result:
> the DVI-attached monitor is still working perfectly, the VGA-attached
> monitor does not detect a
> valid video signal and switches off.
>
> Hardware: AOpen i915GMm-hfs, Pentium-M 1.86 MHz, 2GB RAM
> The Aopen i915GMm-hfs is a desktop board with a mobile Chipset:
>
> 00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML
> Express Processor to DRAM Controller (rev 04)
> 00:02.0 VGA compatible controller: Intel Corporation Mobile
> 915GM/GMS/910GML Express Graphics Controller (rev 04)
> 00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML
> Express Graphics Controller (rev 04)
>
> Config: AGP/DRM/I915 all compiled into kernel, KMS enabled.
>
> Log_Broken contains the result of "cat boot.msg | grep -i drm" of a
> boot with 2.6.31-rc8-git2,
> Log_OK contains the result of "cat boot.msg | grep -i drm" of a boot
> with 2.6.31-rc8-git1
>
> As a black monitor is not a nice gift I think this should be fixed
> before the final release of 2.6.31.
>
> cu,
> Knut


--
Jesse Barnes, Intel Open Source Technology Center


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