Comment # 62
on bug 69723
from Martin Andersson
(In reply to comment #61) > (In reply to comment #60) > > Instead of triggering the power level switches by running GpuTest in bursts, > > I put this in a bash script: > > > > for i in {1..3600} > > do > > echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level > > sleep 1 > > echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level > > sleep 5 > > done > > > > and just let GpuTest, and piglit, run continously. I found that this also > > trigger the lockups within minutes. > > > > Then I ran the script by itself, no GpuTest or piglit, and left it running > > while I was at work. When I came home the machine was still running, so it > > ran for six hours without any lockup. So it seems the power level switching > > alone is not sufficient to trigger the lockups, it also needs a load of some > > sort. > > Do you mean while spread spectrum is still enabled? Yes
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