REGRESSION 2.6.36: radeon KMS console switch broken

Markus Trippelsdorf markus at
Sun Oct 10 06:44:29 PDT 2010

On Sun, Oct 10, 2010 at 02:30:00PM +0200, Andi Kleen wrote:
> Hi,
> I see a radeon regression here with 2.6.36-rc7.
> I updated a system from 2.6.35 to 2.6.36-rc7. Now I cannot 
> switch to the text console from the X server anymore; the screen just 
> keeps displaying the X desktop. Eventually when I switch back
> to X things work again. 
> The console switching worked in 2.6.35 
> (I had occasional GPU hangs in .35, but console switch always worked)
> I didn't change the Xserver userland.
> The system has a ATI Technologies Inc RV710/730 running Dual Head.

You're using the radeonhd driver, which is not supported and outdated.
Try to remove  /usr/lib64/xorg/modules/drivers/ and start
X again...
»A man who doesn't know he is in prison can never escape.«
William S. Burroughs

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