Created attachment 118950 [details]
dmesg.log from Tumbleweed's kernel

System: Opensuse Tumbleweed, but same problem exist on different distributions.
Reproducible: Always

Steps to Reproduce:
1. Boot up system
2. Opensuse boots up with plymouth without much issue.
3. X tries to start, but crashes
4. Opensuse goes to the terminal login
5. The stall messages continue non-stop.

Sample of stall messages:
[  68.950045] radeon 0000:01:00.0: ring 0 stalled for more than 14020msec
[  68.970866] radeon 0000:01:00.0: ring 3 stalled for more than 10479msec

Hardware information:
CPU: AMD FX-8320
Motherboard: Gigabyte GA-970A-D3P
Graphics card: Powercolor 7870 XT Myst Edition (Latest firmware .32 w/ UEFI
support)

Tested on different kernel versions from 42.1 branch, Tumbleweed, and stable
(upstream).


Brand of 7870 XT card does not seem to matter. Another user online had a
Sapphire brand card and the user had the exact same problems.