Re: Regression DRM/i915/KMS: VGA connector unusable after2.6.31-rc8-git1, DVI connector ok

From: Carlos R. Mafra
Date: Tue Sep 08 2009 - 18:37:33 EST


On Wed 9.Sep'09 at 0:19:04 +0200, Knut Petersen 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.

I had a similar problem between -rc8 and -rc9, and the patch here

http://marc.info/?l=linux-kernel&m=125239311508274&w=2

fixed it for me.
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