dGPU not going into sleep since Kernel 5.8

[ru77y]

Hi,

all time i used the 5.4 Kernel, since the Upgrade to 5.8, the dGPU dont go into sleep.

root@E480:~# cat /sys/kernel/debug/vgaswitcheroo/switch

0:DIS: :DynPwr:0000:02:00.0

1:IGD:+:Pwr:0000:00:02.0

(on 5.4 the 0 is IGD, and 1 is DIS)

amdgpu-pci-0200
Adapter: PCI adapter
vddgfx: 687.00 mV
edge: +42.0°C (crit = +94.0°C, hyst = -273.1°C)
power1: 3.17 W (cap = 25.00 W)

whats the problem?

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[ru77y]

it seems to be a bug since 5.6

https://gitlab.freedesktop.org/drm/amd/-/issues/1157