https://bugs.freedesktop.org/show_bug.cgi?id=75985
--- Comment #83 from Przemysław Kopa <[email protected]> ---
> Check the runtime PM status of the HDA:
> grep . /sys/bus/pci/devices/0000:01:00.1/power/*
This is the output of grep . /sys/bus/pci/devices/0000:01:00.1/power/*:
/sys/bus/pci/devices/0000:01:00.1/power/async:enabled
/sys/bus/pci/devices/0000:01:00.1/power/control:on
/sys/bus/pci/devices/0000:01:00.1/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:01:00.1/power/runtime_active_time:122453
/sys/bus/pci/devices/0000:01:00.1/power/runtime_enabled:forbidden
/sys/bus/pci/devices/0000:01:00.1/power/runtime_status:active
/sys/bus/pci/devices/0000:01:00.1/power/runtime_suspended_time:4310
/sys/bus/pci/devices/0000:01:00.1/power/runtime_usage:1
/sys/bus/pci/devices/0000:01:00.1/power/wakeup:disabled
> Check if user space applications have opened the HDA:
> lsof /dev/snd/controlC1
Output of lsof /dev/snd/controlC1 is empty. Normally I'm using pulseaudio and
it grabs the card, but I uninstalled it for testing purposes and it doesn't
make a difference - card stays enabled.
Additionally, if I try to manually turn off dGPU using echo OFF >
/sys/kernel/debug/vgaswitcheroo/switch, it does nothing.
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