| Bug ID | 106303 |
|---|---|
| Summary | amdgpu on RX 560: memory and core clocks not lowered on idle |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | bugs.freedesktop.org@pm.port0.org |
Created attachme= nt 139206 [details] amdgpu_pm_info with 4.15 kernel There is a problem with amdgpu power management. With kernels 4.15.X MCLK is always stays at max value. With kernels 4.16.X MCLK/SCLK both stays at max. At idle desktop GPU draws about 4W more, according to /sys/kernel/debug/dri/0/amdgpu_pm_info Kernels from Ubuntu PPA http://kernel.ub= untu.com/~kernel-ppa/mainline/ DRM/Mesa libs from Oibaf PPA h= ttps://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers
Created attachme=
nt 139207 [details]
amdgpu_pm_info with 4.16 kernel
Created atta=
chment 139208 [details]
syslog (non0\-kernel stuff removed)
Also noted, that /sys/class/drm/card0/device/pp_num_states is limited to: states: 2 0 boot 1 performance And power_dpm_state is always 'performance' regarless of values echoed to power_dpm_force_performance_level (tried 'low', 'auto', 'balanced' and 'boo= t').
>Can you bisect? No, I'm using pre-compiled kernels. However, it's clearly happens in-between 4.15.8 and 4.16.{0 .. 2}. Reproduces stably. >Are you using multiple monitors? No, single monitor via DisplayPort (2560x1440x144). PS. I'm also use amdgpu.dc=3D1
Can confirm. I'm using a Rx 560 on kernel 4.16 and my clock ra=
te is stuck on
1230MHz permanently.
I'm also using a single 2560x1440x144 monitor
This is directly related to DC. If I run with amdgpu.dc=3D0 the issue disap=
pears.
If I run with amdgpu.dc=3D1 it shows up. I can't say if it also happened on=
4.15
or earlier.
I did notice that dmesg shows about a dozen powerplay errors:
[ 94.582083] amdgpu: [powerplay]=20
failed to send message 146 ret is 255=20
[ 94.582091] amdgpu: [powerplay]=20
failed to send pre message 147 ret is 255=20
[ 95.895976] amdgpu: [powerplay]=20
failed to send message 145 ret is 255
Power usage partially improved with kernel 4.17.2 Both MCLK and SCLK now lowered to full idle - when monitor is turned OFF. Also MCLK seems to go idle (300MHz) periodically under low load (2D and browsing). However, SCLK is still run at top values when monitor is ON, regardless of = GPU load (it is about 1-2% according to radeontop utility).
This appears to be fixed for me on 4.18.16. My 570's shader cl= ock now properly goes down to 300MHz on idle, like it does using amdgpu.dc=3D0.
| What | Removed | Added |
|---|---|---|
| Status | NEW | RESOLVED |
| Resolution | --- | MOVED |
-- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this = link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/367.