Toggle hybrid GPU mode via supergfxctl (#4277)

* Toggle hybrid GPU mode via supergfxctl

Very useful for Asus G14 and other laptops with NVIDIA + AMD iGPU
combos.

* Use correct exit

* Simplify

* Wording

* Revise switching process

* Spacing

* These are sudo actions

* Make it exe

* No need for extensions

Matches existing style

* Relying on the new config should be enough since we are restarting anyway

* Prevent race condition

* Reminder to add to OPR

bin/omarchy-toggle-hybrid-gpu

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# Toggle dedicated vs integrated GPU mode via supergfxd (for hybrid gpu laptops, like Asus G14).
+# Requires reboot to take effect.
+
+# Ensure supergfxctl has been installed
+if omarchy-cmd-missing supergfxctl; then
+  # FIXME: Convert this to OPR instead of AUR
+  omarchy-pkg-aur-add supergfxctl
+  sudo systemctl enable supergfxd
+  sudo systemctl start supergfxd
+
+  # Needed to deal with restoring to sleep where going through VFIO first means we don't need to reboot.
+  sudo sed -i "s/\"vfio_enable\": \".*\"/\"vfio_enable\": true/" /etc/supergfxd.conf
+fi
+
+gpu_mode=$(supergfxctl -g)
+
+case "$gpu_mode" in
+"Integrated")
+  if gum confirm "Enable dedicated GPU and reboot?"; then
+    # Switch to hybrid mode
+    sudo sed -i "s/\"mode\": \".*\"/\"mode\": \"Hybrid\"/" /etc/supergfxd.conf
+
+    # Let hybrid mode be the default after system sleep
+    sudo rm -rf /usr/lib/systemd/system-sleep/force-igpu
+
+    # Remove the startup delay override (not needed for Hybrid mode)
+    sudo rm -rf /etc/systemd/system/supergfxd.service.d/delay-start.conf
+
+    omarchy-cmd-reboot
+  fi
+  ;;
+"Hybrid")
+  if gum confirm "Use only integrated GPU and reboot?"; then
+    # Switch to integrated mode
+    sudo sed -i "s/\"mode\": \".*\"/\"mode\": \"Integrated\"/" /etc/supergfxd.conf
+
+    # Force igpu mode after system sleep (or dgpu could get activated)
+    sudo mkdir -p /usr/lib/systemd/system-sleep
+    sudo cp -p  $OMARCHY_PATH/default/systemd/system-sleep/force-igpu /usr/lib/systemd/system-sleep/
+
+    # Delay supergfxd startup to avoid race condition with display manager
+    # that can cause system freeze when booting in Integrated mode
+    sudo mkdir -p /etc/systemd/system/supergfxd.service.d
+    sudo cp -p $OMARCHY_PATH/default/systemd/system/supergfxd.service.d/delay-start.conf /etc/systemd/system/supergfxd.service.d/
+
+    omarchy-cmd-reboot
+  fi
+  ;;
+*)
+  echo "Hybrid GPU not found or in unknown mode."
+  exit 1
+  ;;
+esac