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opti-sw.sh

@@ -0,0 +1,62 @@
+#! /usr/bin/env sh
+
+[ "$USER" = "root" ] && echo "Please DO NOT run this script as root" && exit 1
+
+usage() {
+    echo "Usage:"
+    echo "  nvidia-switch.sh (i)ntel | (n)vidia"
+}
+
+checkinst() {
+    which $1 >/dev/null 2>/dev/null && return 0 || return 1
+}
+
+rc_msg() {
+    TERM_WIDTH=$(stty size | cut -d" " -f2)
+
+    printf "%${TERM_WIDTH}s" | tr " " "_"
+    printf "\n\n"
+    echo "If you haven't done so already, please put the following line as the top of your display manager or XOrg init script (for example ~/.xinitrc for startx or /usr/share/sddm/scripts/Xsetup for SDDM):"
+    echo "sh $HOME/.local/lib/nvidia-switch-rc.sh"
+    printf "%${TERM_WIDTH}s" | tr " " "_"
+}
+
+su_run() {
+    sh -c "$SU_PROG sh -c '$1'"
+}
+
+[ ! -e ~/.local/lib/nvidia-switch-rc.sh ] && mkdir -p ~/.local/lib/ && touch ~/.local/lib/nvidia-switch-rc.sh && chmod +x ~/.local/lib/nvidia-switch-rc.sh
+
+if checkinst "sudo"; then
+    SU_PROG="sudo"
+elif checkinst "doas"; then
+    SU_PROG="doas"
+else
+    SU_PROG="su -c"
+fi
+
+case $1 in
+    i|intel)
+	su_run "modprobe -r nvidia"
+	[ -e /etc/X11/xorg.conf ] && 
+	    su_run "mv -f /etc/X11/xorg.conf /etc/X11/xorg.conf.nvidia" &&
+	    echo "Backed up existing XOrg config file /etc/X11/xorg.conf to /etc/X11/xorg.conf.nvidia"
+	echo " " > ~/.local/lib/nvidia-switch-rc.sh
+
+	echo "Switched to Intel GPU"
+	;;
+    n|nvidia)
+	rc_msg
+	# It will complain about the XOrg config file missing, so I am supressing all output, including errors
+	su_run "nvidia-xconfig --prime" >/dev/null 2>/dev/null
+	su_run "modprobe nvidia"
+	echo -e "xrandr --setprovideroutputsource modesetting NVIDIA-0\nxrandr --auto" > ~/.local/lib/nvidia-switch-rc.sh
+
+	su_run "mkdir -p /etc/modules-load.d"
+	su_run "echo nvidia > /etc/modules-load.d/video.conf"
+
+	echo "Switched to NVIDIA GPU. You will probably need to restart."
+	;;
+    *) usage; exit 1
+	;;
+esac