Bug#660464: KMS is not working for Radeon 9250

[Jonathan Nieder <jrnieder@gmail.com>]

reassign 660464 src:linux-2.6 3.2.4-1
found 660464 linux-2.6/3.2.6-1
tags 660464 + fixed-upstream
quit

Mirek Jezbera wrote:

> After another set of tests, I can confirm, that I have same problem with
> distribution kernel (linux-image-3.2.0-1-686-pae 3.2.4-1 - version in testing).
> I have booted this kernel twice and for the first time I have gui, but second
> time only black screen.

Thanks.  So it is intermittent.

> I have recompiled kernel 3.2.6 (from unstable kernel sources 3.2.6-1) to have
> same options as working 3.3.0-rc1 kernel. From 5 boots I have gui three times
> and black screen twice.
> With linux kernel 3.3.0-rc1 I have always booted into gui. 

Ok.

> When kernel fails to initialize gui, than I see message starting gdm, then
> screen is switched to higher resolution - I see gnome busy cursor (I can move
> with mouse and it is working). When there is also blinking text cursor in upper
> left corner, than no login screen will be visible - only blank screen (with
> working mouse cursor).

Do you mean that there are three modes: successful, busy, blinking
text cursor?

If you boot with the kernel parameter "text", does that avoid trouble?
How about if you run "modprobe radeon" from the console after doing
so?

Can you attach /var/log/Xorg.0.log from a failure starting gdm, and
from a success for comparison?

[...]
> I don't use radeonfb for framebuffer - it is disabled in modprobe.d:
> $ grep radeon *
> fbdev-blacklist.conf:blacklist radeonfb
> radeon-kms.conf:options radeon modeset=1

I did not mean radeonfb but radeondrmfb.

Hope that helps,
Jonathan