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

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91880

--- Comment #55 from Thomas DEBESSE <dev at illwieckz.net> ---
Hi, I made some tests, I discovered that my R9 390X works very well if I never
load the "auto" `power_dpm_force_performance_level` profile, both "low" and
"high" works. Also, both `power_dpm_state` "balanced", "battery", "performance"
works.

So, I wrote a little systemd service that load the "low/battery" profile at
startup (just before multi-user.target so it's loaded before the login manager
startup.

I discovered I can switch `power_dpm_force_performance_level` profile to the
value I want and the same for `power_dpm_state` without any crashing, even when
an heavy task (like Unigine Valley Benchmark) is running.

The fault is on the "auto" `power_dpm_force_performance_level` profile, and
only that. All other options work.

If you want to workaround the bug, you can use my service:
https://github.com/illwieckz/dpm-query/

Just install the service (it will load "low/battery" DPM profile at startup),
then use the `dpm-query` tool to set "high/performance" DPM profile when you
need it.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20160115/6f857c58/attachment.html>