[Bug 82201] [HAWAII] GPU doesn't reclock, poor 3D performance

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Aug 5 11:55:01 PDT 2014


--- Comment #6 from Kai <kai at dev.carbon-project.org> ---
(In reply to comment #5)
> Are you checking radeon_pm_info while the app is running?  E.g., via ssh or
> via another X terminal?  If you switch to another VT or something like that
> there will not be any activity.  Can you try is with something simple like
> glxgears?  E.g., run `vblank_mode=0 glxgears -fullscreen` and then check
> radeon_pm_info via ssh while gears is running.

I've always checked through SSH from a second machine.

Now for your glxgears test: reclocking works (in Portal 2 as well, where I get
58-60 FPS now). The only difference is the radeon.dpm=1 on the kernel command
line. Was that expected? I thought DPM was activated automatically with your
3.17 branch (it says so during boot as well, see e.g. attachment 103996) or at
least I interpreted the "[drm] radeon: dpm initialized" line that way.

As far as I'm concerned this can be closed, though the radeon man page should
probably get a line like "setting radeon.dpm=1 is mandatory for reclocking on
the following ASICs". I let you decide whether this is something that should
have happend automatically (my preference) or that requires the kernel
parameter and close/keep the report accordingly.

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