https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #99 from Eugene ken20001@ukr.net ---
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.