feat(archsetup): add GPU driver detection and installation

- Detect Intel, AMD, and NVIDIA GPUs via lspci
- Install appropriate drivers and hardware video acceleration
- Support multiple GPUs (e.g., hybrid Intel+NVIDIA laptops)
- Add --no-gpu-drivers flag to skip (useful for VMs)
- Use nvidia-dkms for better kernel compatibility
- Add fallback to mesa+vesa for unknown hardware

1 files changed, 55 insertions, 1 deletions

diff --git a/archsetup b/archsetup
index 495ae5a..c656e25 100755
--- a/archsetup
+++ b/archsetup
@@ -31,6 +31,7 @@ fi
 skip_slow_packages=false
 fresh_install=false
 show_status_only=false
+skip_gpu_drivers=false
 
 while [ $# -gt 0 ]; do
     case "$1" in
@@ -46,6 +47,10 @@ while [ $# -gt 0 ]; do
             show_status_only=true
             shift
             ;;
+        --no-gpu-drivers)
+            skip_gpu_drivers=true
+            shift
+            ;;
         --help|-h)
             echo "Usage: $0 [OPTIONS]"
             echo ""
@@ -53,12 +58,13 @@ while [ $# -gt 0 ]; do
             echo "  --skip-slow-packages  Skip texlive-meta and topgrade"
             echo "  --fresh               Start fresh, ignore previous progress"
             echo "  --status              Show installation progress and exit"
+            echo "  --no-gpu-drivers      Skip GPU driver detection/installation"
             echo "  --help, -h            Show this help message"
             exit 0
             ;;
         *)
             echo "Unknown option: $1"
-            echo "Usage: $0 [--skip-slow-packages] [--fresh] [--status]"
+            echo "Usage: $0 [--skip-slow-packages] [--fresh] [--status] [--no-gpu-drivers]"
             exit 1
             ;;
     esac
@@ -331,6 +337,49 @@ is_zfs_root() {
     [ "$(findmnt -n -o FSTYPE /)" = "zfs" ]
 }
 
+# GPU Driver Installation
+install_gpu_drivers() {
+    if $skip_gpu_drivers; then
+        display "task" "Skipping GPU driver installation (--no-gpu-drivers)"
+        return 0
+    fi
+
+    display "subtitle" "GPU Drivers"
+
+    # Detect GPU vendors via lspci
+    gpu_info=$(lspci 2>/dev/null | grep -E "VGA|3D")
+
+    if echo "$gpu_info" | grep -qi "intel"; then
+        display "task" "Intel GPU detected - installing drivers"
+        pacman_install mesa
+        pacman_install intel-media-driver     # hardware video acceleration
+        pacman_install vulkan-intel           # Vulkan support
+    fi
+
+    if echo "$gpu_info" | grep -qi "amd\|radeon"; then
+        display "task" "AMD GPU detected - installing drivers"
+        pacman_install mesa
+        pacman_install xf86-video-amdgpu
+        pacman_install vulkan-radeon
+        pacman_install libva-mesa-driver      # hardware video acceleration
+    fi
+
+    if echo "$gpu_info" | grep -qi "nvidia"; then
+        display "task" "NVIDIA GPU detected - installing drivers"
+        pacman_install nvidia-dkms            # DKMS version for kernel flexibility
+        pacman_install nvidia-utils
+        pacman_install nvidia-settings
+        pacman_install libva-nvidia-driver    # hardware video acceleration
+    fi
+
+    # Fallback for VMs or unknown hardware
+    if ! echo "$gpu_info" | grep -qiE "intel|amd|radeon|nvidia"; then
+        display "task" "No discrete GPU detected - installing generic drivers"
+        pacman_install mesa
+        pacman_install xf86-video-vesa
+    fi
+}
+
 ### Prerequisites
 prerequisites() {
     # why these software packages are 'required'
@@ -885,6 +934,9 @@ EndSection
 EOF
     action="configuring xorg server" && display "task" "$action"
     chmod 644 /etc/X11/xorg.conf.d/00-no-vt-or-zap.conf >> "$logfile" 2>&1 || error "error" "$action" "$?"
+
+    # Install GPU-specific drivers
+    install_gpu_drivers
 }
 
 ### DWM Window Manager
@@ -1356,6 +1408,8 @@ EOF
     echo "blacklist iTCO_wdt" >/etc/modprobe.d/nowatchdog.conf  || error "error" "$action" "$?"
 
     # GRUB: reset timeouts, adjust log levels, larger menu for HiDPI screens, and show splashscreen
+    # Note: nvme.noacpi=1 disables NVMe ACPI power management to prevent freezes on some drives.
+    # Safe to keep on newer drives (minor power cost), remove if battery life is critical.
     action="configuring boot menu for silence and bootsplash" && display "task" "$action"
     if [ -f /etc/default/grub ]; then
         action="resetting timeouts and adjusting log levels on grub boot" && display "task" "$action"