| Bug ID | 110865 |
|---|---|
| Summary | Rx480 consumes 20w more power in idle than under Windows |
| Product | Mesa |
| Version | 19.1 |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Drivers/Gallium/radeonsi |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | mwolf@adiumentum.com |
| QA Contact | dri-devel@lists.freedesktop.org |
Created attachment 144485 [details] logfiles as requested in the amd bugreport guide First I am not sure where to file that bug, so please be gentle with me, if I selected the wrong component. I noticed for a while higher temperatures of my Videocard when my pc was just idling with gnome. Then I dug deeper and found out that my "zero fan" videocard does not stop the fan when I run Linux. So I ran this line here: watch -n 0.5 cat /sys/kernel/debug/dri/0/amdgpu_pm_info and it showed me that the MCLK does not clock down to 300MHz as it does with Windows 10. GFX Clocks and Power: 2000 MHz (MCLK) 300 MHz (SCLK) 300 MHz (PSTATE_SCLK) 300 MHz (PSTATE_MCLK) 1000 mV (VDDGFX) 24.75 W (average GPU) GPU Temperature: 45 C GPU Load: 0 % I have a multimonitor setup with two 1920x1200 pixel screens. When I use Windows 10, the MCLK does not go beyond 300MHz when the desktop is idling. (measured with hwmonitor) When I power-off one screen under linux the (average GPU) goes down to 8-10W and the MCLK drops to 300MHz, so the card can clock down, but is somehow prohibited by the driver or configuration? I followed this bug report guide from amd: https://www.amd.com/en/support/kb/faq/amdgpu-installation#faq-Reporting-Bugs and attached several logfiles.
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