Bug#567999: xserver-xorg-video-radeon: Please compile with kernel-based modesetting (KMS) enabled

[Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Hi Brice,

thanks for your fast reply!

On Mon, Feb 01, 2010 at 08:15:47PM +0100, Brice Goglin wrote:
> 
> Yes, KMS cannot be enabled in current 6.12 packages, we need a snapshot
> of git master. I am thinking of working on this in the next days and
> upload it to experimental.

Ah, that would be great. Please let me know once the package is in
experimental.

> 
> Last time I tried, I had some problems with the radeon kernel driver
> being loaded too late (see [1]). What do you use on Ubuntu in
> /etc/modprobe.d/ or on the kernel command line ?

Yes, older versions of the driver were quite prone to crash with KMS
enabled. X would just die out of nothing when clicking on a window. It
was extremely hard to reproduce but at least there were some error
messages in the logs, so I guess Airlie and others have finally fixed
it.

On the current Ubuntu 10.04, it's enabled by default in the kernel:

root@oslo:/boot> grep RADEON_KMS config-`uname -r`
CONFIG_DRM_RADEON_KMS=y

It's neither set on the command line nor in
/etc/initramfs-tools/modules


Adrian