Bug#632880:
 

On Сб., 2012-02-11 at 04:43 -0600, Jonathan Nieder wrote:
> reassign 659463 src:linux-2.6 3.2.4-1
> quit
>
> Hi Михаил,
>
> Гаврилов Михаил Витальевич wrote:
>
> > [ 5.614298] ni_cp: Failed to load firmware "radeon/TURKS_pfp.bin"
> > [ 5.614346] [drm:evergreen_startup] *ERROR* Failed to load firmware!
>
> Is the firmware-linux-nonfree package installed?
>
> Curious,
> Jonathan

Thanks. Installing firmware-linux-nonfree solve this problem.
Why firmware-linux-nonfree not included in default distribution?
If you have some reasons not include firmware-linux-nonfree in default
distribution, could you automate and simplify installing
firmware-linux-nonfree in debian installer as an essential package for
some devices?