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Implement USE_BBSWITCH option #137

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Implement USE_BBSWITCH option #137

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7 changes: 6 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,7 @@ sudo dnf install nvidia-xrun
```

## Troubleshooting

### Steam issues
Yes unfortunately running Steam directly with nvidia-xrun does not work well - I recommend to use some window manager like openbox.

Expand All @@ -106,6 +107,10 @@ To fix, you can change the DPI settings in `~/.Xresources (~/.Xdefaults)` file b
Xft.dpi: 192
```

### Crashing during when unloading nvidia modules

Try set `USE_BBSWITCH=1`, you'll have to install `bbswitch` manually as well.

### `nouveau` driver conflict
`nouveau` driver should be automatically blacklisted by `nvidia` but in case it is not, `nvidia` might not get access to GPU. Then you need to manually blacklist `nouveau` following Arch wiki https://wiki.archlinux.org/index.php/kernel_modules#Blacklisting.

Expand All @@ -119,4 +124,4 @@ In that case, you should add `--ignore-install` to `modprobe` calls in `nvidia-x
### Vulkan does not work
Check https://wiki.archlinux.org/index.php/Vulkan
* remove package vulkan-intel
* set VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/nvidia_icd.json
* set VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/nvidia_icd.json
8 changes: 8 additions & 0 deletions config/nvidia-xrun
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Expand Up @@ -11,8 +11,16 @@ ENABLE_PM=1
# and some other programs tend to load the nvidia module if they detect a
# nvidia card in the system, and when the module is loaded the card can't save
# power.
#
# USE_BBSWITCH option below can override the behavior of this option.
REMOVE_DEVICE=1

# When enabled, nvidia-xrun will toggle power for the card using bbswitch.
# This *requires* bbswitch to be installed.
#
# Note that this option overrides REMOVE_DEVICE paramter above when enabled.
USE_BBSWITCH=0

# Bus ID of the PCI express controller
CONTROLLER_BUS_ID=0000:00:01.0

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50 changes: 30 additions & 20 deletions nvidia-xrun
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Expand Up @@ -19,34 +19,44 @@ function execute {
}

function turn_off_gpu {
if [[ "$REMOVE_DEVICE" == '1' ]]; then
echo 'Removing Nvidia bus from the kernel'
execute "sudo tee /sys/bus/pci/devices/${DEVICE_BUS_ID}/remove <<<1"
if [[ "$USE_BBSWITCH" == '1' ]]; then
echo 'Turning off GPU using bbswitch '
execute "sudo tee /proc/acpi/bbswitch <<<'OFF'"
else
echo 'Enabling powersave for the graphic card'
execute "sudo tee /sys/bus/pci/devices/${DEVICE_BUS_ID}/power/control <<<auto"
if [[ "$REMOVE_DEVICE" == '1' ]]; then
echo 'Removing Nvidia bus from the kernel'
execute "sudo tee /sys/bus/pci/devices/${DEVICE_BUS_ID}/remove <<<1"
else
echo 'Enabling powersave for the graphic card'
execute "sudo tee /sys/bus/pci/devices/${DEVICE_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"
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 {
echo 'Turning the PCIe controller on to allow card rescan'
execute "sudo tee /sys/bus/pci/devices/${CONTROLLER_BUS_ID}/power/control <<<on"
if [[ "$USE_BBSWITCH" == '1' ]]; then
echo 'Turning on GPU using bbswitch '
execute "sudo tee /proc/acpi/bbswitch <<<'ON'"
else
echo 'Turning the PCIe controller on to allow card rescan'
execute "sudo tee /sys/bus/pci/devices/${CONTROLLER_BUS_ID}/power/control <<<on"

echo 'Waiting 1 second'
execute "sleep 1"
echo 'Waiting 1 second'
execute "sleep 1"

if [[ ! -d /sys/bus/pci/devices/${DEVICE_BUS_ID} ]]; then
echo 'Rescanning PCI devices'
execute "sudo tee /sys/bus/pci/rescan <<<1"
echo "Waiting ${BUS_RESCAN_WAIT_SEC} second for rescan"
execute "sleep ${BUS_RESCAN_WAIT_SEC}"
fi
if [[ ! -d /sys/bus/pci/devices/${DEVICE_BUS_ID} ]]; then
echo 'Rescanning PCI devices'
execute "sudo tee /sys/bus/pci/rescan <<<1"
echo "Waiting ${BUS_RESCAN_WAIT_SEC} second for rescan"
execute "sleep ${BUS_RESCAN_WAIT_SEC}"
fi

echo 'Turning the card on'
execute "sudo tee /sys/bus/pci/devices/${DEVICE_BUS_ID}/power/control <<<on"
echo 'Turning the card on'
execute "sudo tee /sys/bus/pci/devices/${DEVICE_BUS_ID}/power/control <<<on"
fi
}

function load_modules {
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