[Bug 205291] Cannot switch off Radeon HD 4330/4350/4550 with vgaswitcheroo

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=205291

--- Comment #9 from K J Petrie (kernel.bugs at kjpetrie.co.uk) ---
Well, it'll take time to patch and recompile the kernel, but in the meantime
here is all the contents of the power directories:

AMD Radeon GPU
cat /sys/bus/pci/devices/0000\:01\:00.0/power/runtime_status 
active
cat /sys/bus/pci/devices/0000\:01\:00.0/power/control 
auto
cat /sys/bus/pci/devices/0000\:01\:00.0/power/autosuspend_delay_ms 
5000
cat /sys/bus/pci/devices/0000\:01\:00.0/power/runtime_active_time 
1744516
cat /sys/bus/pci/devices/0000\:01\:00.0/power/runtime_suspended_time 
184197

AMD HDA
cat /sys/bus/pci/devices/0000\:01\:00.1/power/runtime_status 
active
cat /sys/bus/pci/devices/0000\:01\:00.1/power/control 
auto
cat /sys/bus/pci/devices/0000\:01\:00.1/power/autosuspend_delay_ms 
cat: '/sys/bus/pci/devices/0000:01:00.1/power/autosuspend_delay_ms':
Input/output error
cat /sys/bus/pci/devices/0000\:01\:00.1/power/runtime_active_time 
2415454
cat /sys/bus/pci/devices/0000\:01\:00.1/power/runtime_suspended_time 
214644

I double-checked that IO error, in case it was just a fluke, but it's
consistent.

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