Comment # 20
on bug 65963
from Alex Deucher
(In reply to comment #19) > @Damian, I had the same problems. My configuration is similar to yours: > Radeon 7870, Linux 3.16.1, xorg 1.16, MESA 10.3 RC1 (fedora f21 branch). > > After consulting https://wiki.archlinux.org/index.php/ATI it tried adding > radeon.dpm=0 to my kernel command line as a workaround. It solved the > problem. No more lockups. The system is now stable with the above > configuration. Clearly this has something to do with the powermanagement > changes in MESA and the kernel (there were no lockups with earlier versions > of MESA) There is no power management code in mesa. Power management is completely self-contained in the kernel. If you are not getting lockups with dpm enabled and an older version of mesa, it may be a mesa issue.
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