Bug#586995: xserver-xorg-video-radeon: KMS not working on ATI Technologies Inc M56P [Radeon Mobility X1600]

Julien Cristau jcristau at debian.org
Thu Jun 24 06:31:17 PDT 2010

On Thu, Jun 24, 2010 at 14:38:47 +0300, Teodor wrote:

> After the last upgrade the screen is unreadable at boot, both the console
> and the X11 login prompt. The only way for me to work was to boot with and
> older kernel (2.6.32-3-amd64) and comment the line from /etc/modprobe.d
> which enables the KMS for radeon. The kernel boot option 'nomodeset' on
> grub2 didn't worked as long as the line from radeon-kms.conf is enabled.
> Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-5-amd64 root=UUID=6f822aa6-3605-4e2e-bfca-7f27fc0ad9fa ro panic=20 vga=788

You need to remove the vga=... parameter from your kernel command line.

> (II) Primary Device is: PCI 01 at 00:00:0
> (II) [KMS] drm report modesetting isn't supported.

Please attach a log from running with kms enabled.

> Versions of packages xserver-xorg-video-radeon suggests:
> pn  firmware-linux                <none>     (no description available)
And make sure this package is installed.

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