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Potential Fix: lockups with HD Audio controller #155

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Potential Fix: lockups with HD Audio controller #155

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8 changes: 8 additions & 0 deletions config/nvidia-xrun
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,14 @@ REMOVE_DEVICE=1
# Bus ID of the PCI express controller
CONTROLLER_BUS_ID=0000:00:01.0

# Turning the PCIe controller on when the HD audio controller is turned off
# can lead to hung tee processes, hung kernel tasks and total system lockups.
# If HDA_CONTROLLER_BUS_ID is set to the Bus ID of the NVIDIA HD audio controller
# it will be turned on before the PCIe controller is.
#
# Bus ID of the HD audio controller
#HDA_CONTROLLER_BUS_ID=0000:01:00.1

# Bus ID of the graphic card
DEVICE_BUS_ID=0000:01:00.0

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13 changes: 13 additions & 0 deletions nvidia-xrun
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Expand Up @@ -27,11 +27,24 @@ function turn_off_gpu {
execute "sudo tee /sys/bus/pci/devices/${DEVICE_BUS_ID}/power/control <<<auto"
fi

if [ -n "$HDA_CONTROLLER_BUS_ID" ]; then
echo 'Enabling powersave for the HD audio controller'
execute "sudo tee /sys/bus/pci/devices/${HDA_CONTROLLER_BUS_ID}/power/control <<<auto"
fi

echo 'Enabling powersave for the PCIe controller'
execute "sudo tee /sys/bus/pci/devices/${CONTROLLER_BUS_ID}/power/control <<<auto"
}

function turn_on_gpu {

if [ -n "$HDA_CONTROLLER_BUS_ID" ]; then
echo 'Turning on the HD audio controller:'
echo " This may throw a pci_err: \"can't change power state [...] (config space inaccessible)\""
echo " But it can avoid some lockups. "
execute "sudo tee /sys/bus/pci/devices/${HDA_CONTROLLER_BUS_ID}/power/control <<<on"
fi

echo 'Turning the PCIe controller on to allow card rescan'
execute "sudo tee /sys/bus/pci/devices/${CONTROLLER_BUS_ID}/power/control <<<on"

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