120 lines
3.5 KiB
Bash
Executable File
120 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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# blob:summary=Toggle dedicated vs integrated GPU mode via supergfxd (for hybrid gpu laptops, like Asus G14).
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# blob:requires-sudo=true
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install_root_file() {
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local source="$1"
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local destination="$2"
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local mode="$3"
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local stage
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stage=$(sudo /usr/bin/mktemp -- "${destination%/*}/.${destination##*/}.blob.XXXXXX") || return 1
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safe_stage_path "$stage" "$destination" || return 1
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if sudo /usr/bin/install -m "$mode" -o root -g root -T "$source" "$stage" &&
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sudo /usr/bin/mv -Tf -- "$stage" "$destination"; then
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return 0
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else
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safe_stage_path "$stage" "$destination" && sudo /usr/bin/rm -f -- "$stage"
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return 1
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fi
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}
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safe_stage_path() {
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local stage="$1"
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local destination="$2"
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local prefix suffix
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prefix="${destination%/*}/.${destination##*/}.blob."
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[[ $stage == "$prefix"* ]] || return 1
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suffix=${stage#"$prefix"}
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[[ $suffix =~ ^[[:alnum:]]{6}$ ]]
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}
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if blob-cmd-missing supergfxctl; then
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blob-pkg-add supergfxctl
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# Create config before starting service to prevent hang on first boot
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sudo tee /etc/supergfxd.conf >/dev/null <<'CONF'
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{
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"mode": "Hybrid",
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"vfio_enable": true,
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"vfio_save": false,
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"always_reboot": false,
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"no_logind": false,
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"logout_timeout_s": 180,
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"hotplug_type": "None"
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}
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CONF
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sudo systemctl enable --now supergfxd
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fi
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gpu_mode=""
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for attempt in {1..3}; do
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if gpu_mode=$(timeout --kill-after=1s 3s supergfxctl -g 2>/dev/null) && [[ -n $gpu_mode ]]; then
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break
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fi
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gpu_mode=""
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(( attempt < 3 )) && sleep 1
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done
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if [[ -z $gpu_mode ]]; then
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echo "supergfxd is not responding. Try again, or check: systemctl status supergfxd" >&2
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exit 1
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fi
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case "$gpu_mode" in
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"Integrated")
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if gum confirm "Enable dedicated GPU and reboot?"; then
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# Switch to hybrid mode
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sudo sed -i "s/\"mode\": \".*\"/\"mode\": \"Hybrid\"/" /etc/supergfxd.conf
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# Let hybrid mode be the default after system sleep
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sudo rm -rf /usr/lib/systemd/system-sleep/force-igpu
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# Remove the startup delay override (not needed for Hybrid mode)
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sudo rm -rf /etc/systemd/system/supergfxd.service.d/delay-start.conf
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blob-system-reboot
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fi
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;;
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"Hybrid")
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if gum confirm "Use only integrated GPU and reboot?"; then
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# Delay supergfxd startup to avoid race condition with display manager
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# that can cause system freeze when booting in Integrated mode
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sudo mkdir -p /etc/systemd/system/supergfxd.service.d
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if ! install_root_file "$BLOB_PATH/default/systemd/system/supergfxd.service.d/delay-start.conf" \
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/etc/systemd/system/supergfxd.service.d/delay-start.conf 0644; then
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echo "Could not install the supergfxd startup-delay override" >&2
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exit 1
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fi
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# Publish the self-guarding sleep hook before enabling Integrated mode. It
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# remains inert while the config says Hybrid, so any failed step is safe to
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# retry without leaving the GPU config partially switched.
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sudo mkdir -p /usr/lib/systemd/system-sleep
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if ! install_root_file "$BLOB_PATH/default/systemd/system-sleep/force-igpu" \
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/usr/lib/systemd/system-sleep/force-igpu 0755; then
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echo "Could not install the force-igpu system-sleep hook" >&2
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exit 1
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fi
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# Switch both settings in one atomic config rewrite only after every
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# supporting file has been installed successfully.
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sudo sed -i \
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-e 's/"mode": ".*"/"mode": "Integrated"/' \
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-e 's/"vfio_enable": false/"vfio_enable": true/' \
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/etc/supergfxd.conf
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blob-system-reboot
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fi
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;;
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*)
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echo "Hybrid GPU not found or in unknown mode."
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exit 1
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;;
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esac
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