Comment # 9
on bug 97260
from Alex Deucher
(In reply to Kai from comment #8) > (In reply to Alex Deucher from comment #6) > > Does reverting 5e031d9fe8b0741f11d49667dfc3ebf5454121fd (drm/radeon/pm: > > update current crtc info after setting the powerstate) help? > > No, it does not for me (I fetched the patch from > <https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/ > ?id=5e031d9fe8b0741f11d49667dfc3ebf5454121fd> and applied it with patch -p1 > -R < /path/to.patch). The Talos Principle is still down to 43 FPS, haven't > tested XCOM 2 or anything else. > > Btw, not sure if it can help tracking down the cause: the GPU doesn't seem > to go into its highest performance mode or at least the fan is not reaching > its highest RPM when I'm on 4.7.0 (with or without the revert). You can check by running apps and monitoring the content of /sys/kernel/debug/dri/64/radeon_pm_info Do you see it scaling up under load on the problematic kernels? Does forcing the clocks to high via sysfs work ok?
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