Comment # 5 on bug 94708 from Alex Deucher

(In reply to Marko Tikvic from comment #4)
> I haven't tried turning off dynamic power management during boot time. Just
> in case I edit that line, does that mean that I would have to start DPM
> manually if I want to use discrete GPU?

dynpm != dpm.  dynpm controls whether the dGPU is powered down when not in use
or not.  dpm dynamically adjusts the clocks on the GPU based on load.