Bug#585911: display breaks on Lenovo W500 with KMS

Brice Goglin Brice.Goglin at ens-lyon.org
Mon Jun 14 14:10:55 PDT 2010

Le 14/06/2010 22:24, Brent S. Elmer a écrit :
> Package: xserver-xorg-video-radeon
> Version: 1:6.13.0-2
> Severity: normal
> I upgraded to the latest xserver-xorg-video-radeon that hit Squeeze.  I have a
> Lenovo W500 Thinkpad.  There is an Intel integrated graphics chip and a
> discrete graphics chip(ATI Mobility FireGL V5700).  In the BIOS I select the
> discrete graphics and turn off the switchable graphics.  I have a custom
> compiled 2.6.32 kernel.  This setup has been working great until the radeon
> upgrade.  When it boots, now I can see part of the boot process on the screen
> and then the screen just continues to get brighter and brighter until it is
> totally white.  I don't think X ever starts but I can't really tell because I
> can't see anything.  Luckily I still had a 2.6.30 kernel that would boot.  Once
> I could get in, I turned off KMS in /etc/modprobe.d/radeon-kms.conf as the
> NEWS.Debian.gz says.  The 2.6.32 kernel would then boot fine as it did before.
> Is KMS expected to work on this system?  Is there something I need to put in
> the 2.6.32 kernel to make it work?

You need DRM kernel drivers from 2.6.33 or later since you need the
radeon KMS driver. That's what Debian's linux-image-2.6.32-5-$arch
contains (and even more fixes that came after 2.6.33).


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