[Bug 106303] amdgpu on RX 560: memory and core clocks not lowered on idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106303

            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 at lists.freedesktop.org
          Reporter: bugs.freedesktop.org at pm.port0.org

Created attachment 139206
  --> https://bugs.freedesktop.org/attachment.cgi?id=139206&action=edit
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.ubuntu.com/~kernel-ppa/mainline/

DRM/Mesa libs from Oibaf PPA
https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers

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