Re: REGRESSION 2.6.36: radeon KMS console switch broken

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On Sun, Oct 10, 2010 at 04:09:08PM +0200, Andi Kleen wrote:
> On Sun, Oct 10, 2010 at 03:44:29PM +0200, Markus Trippelsdorf wrote:
> > 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 You're using the radeonhd driver, which is not supported and outdated.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/radeonhd_drv.so and start
> > X again...
> 
> No you misread the Xorg.0.log: 
> 
> [    50.161] (II) Module radeonhd: vendor="AMD GPG"
> ...
> [    51.636] (EE) FATAL: RadeonHD presently does not work with kernel modesetting (KMS).
> ...
> [    50.167] (II) LoadModule: "radeon"
> ....
> [    52.214] (II) UnloadModule: "radeonhd"
> ...
> 
> It's using radeon.
> 
> Besides if radeonhd stopped working that would be a regression too, but that's
> not what we have here.

Another thing you may try is: modprobe fbcon
Also please post your (framebuffer related) kernel config.

-- 
»A man who doesn't know he is in prison can never escape.«
William S. Burroughs
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