> Can you attach a copy of your vbios?
> 
> (as root)
> (use lspci to get the bus id)
> cd /sys/bus/pci/devices/<pci bus id>
> echo 1 > rom
> cat rom > /tmp/vbios.rom
> echo 0 > rom
Yes, here it is, in attachment.

> Also, can you get a copy of the dmesg output from the driver after it loads?
> Try booting into a non-X runlevel without loading radeon (either blacklist
> it, or set radeon.modeset=0 on the kernel command line in grub) and then
> manually load it.  E.g.,
> modprobe -r radeon
> modprobe radeon modeset=1 dpm=1

I'm sorry I don't understand fully how to do this.

> If possible, try and do it over ssh from a second machine so you can still
> access it if you lose the display.
Also there is no possibility to connect to my pc through ssh.