Bug#762047: xserver-xorg-video-ati: Black screen with mouse cursor on PowerPC

Michel Dänzer michel at daenzer.net
Fri Sep 19 02:50:14 PDT 2014

On 18.09.2014 23:33, Bill Chatfield wrote:
> It would seem so, but it is the right information. I double checked
> that it is right by booting without the video kernel parameter and
> running dmesg.

Okay, so I think your original problem is because the Xorg fbdev driver 
uses the colour depth from console by default, and I guess the login 
manager you're using can't deal with that. You may want to report that 
against the login manager package, but you probably want to use a higher 
colour depth anyway. So you need to change it, either for console as 
you've been doing, or just for X in /etc/X11/xorg.conf or by having the 
login manager pass -depth XX on the Xorg command line.

> I got the same radeonfb lines that you show in your message. I think
> that's part of the problem, radeonfb is compiled into the kernel and
> active when drm/radeon are being used?

Right, to use radeon KMS, you need to disable radeonfb with 
video=radeonfb:off on the kernel command line. That should give you at 
least 2D hardware acceleration, but suspend/resume won't work.

Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer

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