https://bugs.freedesktop.org/show_bug.cgi?id=108379
Bug ID: 108379
Summary: high idle power consumption
Product: DRI
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/AMDgpu
Assignee: [email protected]
Reporter: [email protected]
system:
- Polaris10 (Ellesmere)
- Linux 4.18.14
- WQHD (2560*1440 pixels) monitor with 144 Hz (DisplayPort)
expected behaviour:
GPU power states should be lowered to the minimum states while idling to save
power, heat and noise.
actual behaviour:
- DC on (default):
GPU stuck at highest SCLK DPM state, power consumption as per amdgpu_pm_info
is ~24 Watts
- amdgpu.dc=0:
MCLK stuck at high DPM state, power consumption as per amdgpu_pm_info is ~26
Watts
- Windows:
correct (lowest) SCLK/MCLK DPM states, measured power consumption is ~16
Watts lower compared to Linux
Note: https://bugzilla.kernel.org/show_bug.cgi?id=201275 fixed a regression
causing *additional* power draw (SCLK and MCLK both at max, power consumption
at ~38 Watts while idling).
I can't tell if it's a regression as I've just recently got the GPU. Randomly
tested kernels from within 4.17 to 4.18.14 all suffer from this issue.
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