[Bug 213823] New: Broken power management for amdgpu

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213823

            Bug ID: 213823
           Summary: Broken power management for amdgpu
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.13.4
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: bruno.n.pagani@gmail.com
        Regression: No

Created attachment 298003
  --> https://bugzilla.kernel.org/attachment.cgi?id=298003&action=edit
amdgpu dmesg output on 5.12

After upgrading to kernel 5.13.4 (from 5.12.15, on Arch Linux), I’ve realized
my AMD dGPU was not powering off anymore resulting in increased power
consumption, heat and noise (because of the fan trying to dissipate the heat).

I’ve compared kernel dmesg on both kernels, and I’ve found related differences:

@@ -1,4 +1,6 @@
 [drm] amdgpu kernel modesetting enabled.
+amdgpu: CRAT table not found
+amdgpu: Virtual CRAT table created for CPU
 amdgpu: Topology: Add CPU node
 fb0: switching to amdgpudrmfb from EFI VGA
 amdgpu 0000:01:00.0: enabling device (0006 -> 0007)
@@ -14,7 +16,10 @@ amdgpu 0000:01:00.0: amdgpu: GART: 256M 0x000000FF00000000 -
0x000000FF0FFFFFFF
 [drm] amdgpu: 4096M of VRAM memory ready
 [drm] amdgpu: 4096M of GTT memory ready.
 amdgpu: hwmgr_sw_init smu backed is vegam_smu
+kfd kfd: amdgpu: Allocated 3969056 bytes on gart
+amdgpu: Virtual CRAT table created for GPU
 amdgpu: Topology: Add dGPU node [0x694f:0x1002]
+kfd kfd: amdgpu: added device 1002:694f
 amdgpu 0000:01:00.0: amdgpu: SE 4, SH per SE 1, CU per SH 6, active_cu_number
20
-amdgpu 0000:01:00.0: amdgpu: Using ATPX for runtime pm
-[drm] Initialized amdgpu 3.40.0 20150101 for 0000:01:00.0 on minor 1
+amdgpu 0000:01:00.0: amdgpu: Using BOCO for runtime pm
+[drm] Initialized amdgpu 3.41.0 20150101 for 0000:01:00.0 on minor 1

I’ve attached both excerpt matching the diff above.

FWIW, this is a Dell Precision 5530 2-in-1 with a Kaby Lake-G CPU, which has an
Intel HD 630 iGPU as well as an AMD Polaris 22 MGL XL [Radeon Pro WX Vega M GL]
dGPU.

Please tell me if there is anything else that I can provide in order to fix
this.

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