Q: 'MacModel' replacement for radeon driver?

[Michel Dänzer]

On Mit, 2013-02-13 at 21:07 +0100, Albrecht Dreß wrote: 
> Am 13.02.13 19:01 schrieb(en) Alex Deucher:
> > On Wed, Feb 13, 2013 at 12:59 PM, Daniel Vetter <daniel at ffwll.ch> wrote:
> >> On Thu, Jan 31, 2013 at 4:50 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> >>> You could try and bisect if KMS used to work at some point in the
> past. I've recently seen reports from others of r1xx cards working ok
> at least on x86.
> >> 
> >> I have an rv270 on an mac mini here and that thing used to work
> with kms. Been a while though since I've last fired it up ... So going
> back and trying to bisect could be really useful. 
> > 
> > If you could that would be great.
> 
> The intermediate status:  I installed Debian Squeeze on an extra disk,
> and there the radeon driver works when I add the 'Option "MacModel"
> "mini-internal"' to xorg.conf.  Not a big surprise, as Linux 2.6.32 is
> rather old.  I also included 'radeon.modeset=1' in the Kernel command
> line.  dmesg says '[drm] radeon kernel modesetting enabled', but
> Xorg.0.log warns '[KMS] drm report modesetting isn't supported.'.  

That means the X driver is running in UMS mode and programming the
hardware directly behind the kernel driver's back, so this is not a
valid test for KMS working. Make sure the radeon kernel module is loaded
before X starts.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer