Bug#472108: Found a solution
On Fri, 2010-04-02 at 15:39 +0100, Anthony Campbell wrote:
> After reading NEWS.Debian.gz for xserver-xorg-video-radeon I followed
> the suggestion to turn off KMS by editing
> /etc/modprobe.d/radeon-kms.conf. I could then switch back and forth
> between X and VT without problems.
> Perhaps this information should also be included in the documentation
> for xserver-xorg-video-ati?
KMS generally makes VT switching more reliable, not less.
Since this report wasn't about KMS, your problem is probably different
and needs to be analyzed / tracked separately. Probably easiest if you
just start your own report with all the usual information.
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer