Nearly a year later, hello again, :) On Mon, 2020-09-14 at 01:46 -0400, Alex Deucher wrote: > On older radeons (e.g., pre-GCN hardware), there were separate power > states for battery and AC, but these asics are supported by the radeon > kernel driver. None of the hardware supported by amdgpu exposes > anything like that anymore. The rest is mainly for profiling and > debugging. For more information see the relevant kernel > documentation: > https://www.kernel.org/doc/html/latest/gpu/amdgpu.html#gpu-power-thermal-controls-and-monitoring > I don't think there is anything you'd want to tweak there. Is the power_dpm_force_performance_level sysfs property for the amdgpu driver not something that one could tweak? https://www.kernel.org/doc/html/latest/gpu/amdgpu.html#power-dpm-force-performance-level System76's own power management daemon changes it: https://github.com/pop-os/system76-power/blob/master/src/radeon.rs So I'm wondering whether it would have any effect, for example, I would expect setting "high" when a performance mode is requested so that there's little latency in terms of frequency switching, "low" to force minimal power draw in a power saving mode, and "auto" the rest of the time. Cheers
