[Bug 91880] Radeonsi on Grenada cards (r9 390) exceptionally unstable and poorly performing

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Comment # 170 on bug 91880 from
(In reply to Stefan from comment #160)
> Jon Doane, to alleviate your pains, set radeon.dpm=0 as a boot option.

Crippling GPU performance is not a solution and doesn't alleviate pains because
it basically forces me to not do anything 3d-related. I would rather boot with
X disabled so I can force the perf level to high. This is what I used to do and
it's not an acceptable solution.

(In reply to Thomas DEBESSE from comment #164)
> (In reply to Jon Doane from comment #159)
> > I've literally been doing:
> > "echo  high > /sys/class/device/drm/card0/power_dpm_force_performance_level"
> > every day to boot my machine for over a year
> 
> See comment 55 if your system is running systemd, you can use this service:
> 
> https://github.com/illwieckz/dpm-query/
> 
> It will do it for you at startup, it's painless and I'm using it since 19
> months without any issue.

This sounds a lot like what I've been doing manually which sounds nice. Thanks
for the input. I honestly would like a solution that doesn't cause my machine
to draw an additional 90 watts at idle though. As I said, I've been doing this
for well over a year now and I'd prefer a solution, not a hack, considering how
old this issue is.


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