Created attachment 142715 [detai=
ls]
xorg log
It looks like this:
/sys/kernel/debug/dri/0/amdgpu_pm_info
Clock Gating Flags Mask: 0x3fbcf
Graphics Medium Grain Clock Gating: On
Graphics Medium Grain memory Light Sleep: On
Graphics Coarse Grain Clock Gating: On
Graphics Coarse Grain memory Light Sleep: On
Graphics Coarse Grain Tree Shader Clock Gating: Off
Graphics Coarse Grain Tree Shader Light Sleep: Off
Graphics Command Processor Light Sleep: On
Graphics Run List Controller Light Sleep: On
Graphics 3D Coarse Grain Clock Gating: Off
Graphics 3D Coarse Grain memory Light Sleep: Off
Memory Controller Light Sleep: On
Memory Controller Medium Grain Clock Gating: On
System Direct Memory Access Light Sleep: Off
System Direct Memory Access Medium Grain Clock Gating: On
Bus Interface Medium Grain Clock Gating: Off
Bus Interface Light Sleep: On
Unified Video Decoder Medium Grain Clock Gating: On
Video Compression Engine Medium Grain Clock Gating: On
Host Data Path Light Sleep: On
Host Data Path Medium Grain Clock Gating: On
Digital Right Management Medium Grain Clock Gating: Off
Digital Right Management Light Sleep: Off
Rom Medium Grain Clock Gating: On
Data Fabric Medium Grain Clock Gating: Off
GFX Clocks and Power:
300 MHz (MCLK)
300 MHz (SCLK)
600 MHz (PSTATE_SCLK)
1000 MHz (PSTATE_MCLK)
750 mV (VDDGFX)
29.159 W (average GPU)
GPU Temperature: 28 C
GPU Load: 0 %
But: Physical wattmeter measures 38W for the whole system. So apparently, t=
he
reported power usage in amdgpu_pm_info must be wrong for idle.
Power consumption of the whole system is a bit lower on Windows (30W). So
probably GPU power saving doesn't work as good as on Windows, but this does=
n't
explain the unrealistic number reported in amdgpu_pm_info.
I btw. also noticed that power saving of Vega works much better than of Pol=
aris
on Linux. With Polaris, the clocks get up real quickly for even the slighte=
st
amount of GPU load. Vega saves much more power and doesn't stutter, despite=
of
the higher savings.
I had a RX 560 before the RX 580, and I think its idle power consumption was
correctly reported with something like 3W (not 30) or so.
latest 4.21-wip kernel