Bash Script for Switching Graphics Modes on System 76 Oryx Pro

graphics.sh

#!/bin/bash

# This is a script for switching between Intel and NVIDIA graphics modes 
# on System 76 Oryx Pros. It was written because I installed KDE Plasma,
# thereby losing the graphics-switching functionality built into Gnome.
# But it should work just fine under Gnome, as well, if you're into that.
#
# It uses a modified version of Dave Miller's excellent ask.sh script,
# which can be found here:
# https://gist.github.com/davejamesmiller/1965569
#
# To modify ask.sh, simply change line 23 to read
# echo -n -e "$1 [$prompt] "
#
# (Adding the -e flag enables support for escape sequences, which allows 
# the colored text formatting.)
#
# It also uses my own colors.sh script, which defines a list of colors
# for text formatting:
# https://gist.github.com/jmatthewturner/2aeee120aa112fd51b000e13579c2654
#
# Written by jmatthewturner
# https://github.com/jmatthewturner
# https://www.youtube.com/jmatthewturner/
#
# https://gist.github.com/jmatthewturner/0a224a9e906a14e19b9230da8e17295b
# 

source ~/Scripts/ask.sh		# https://gist.github.com/davejamesmiller/1965569
source ~/Scripts/colors.sh	# https://gist.github.com/jmatthewturner/2aeee120aa112fd51b000e13579c2654

# Restart the machine after the graphics have been updated.
#
function restart()
{
if ask "You need to restart for the change to take effect. Would you like to restart now?" N
then
        echo "Restarting..."
        sudo shutdown -r now
else
        echo -e "${new_color}$new_mode_formatted ${RESET}graphics will take effect upon next restart."
        echo
fi
}

# Switch from current graphics mode to new graphics mode.
#
function switch()
{
if ask "Would you like to switch to ${new_color}$new_mode_formatted ${RESET}graphics?" Y
then
        system76-power graphics $new_mode
	echo
        echo 'Done.'
	echo
	restart

else
	echo
	echo "Well ok, then."
	echo
fi
}

# BEGIN MAIN ROUTINE
#
# Establish which graphics mode we are currently in and define colors for later formatting.
#

current_mode=$( system76-power graphics )	# Get current graphics mode.

if [ $current_mode == 'intel' ]
then
	current_mode_formatted=Intel	# Current graphics mode for formatted output.
	current_color=$LIGHTBLUE	# Used to format Intel as light blue.
	new_color=$LIGHTYELLOW		# Used to format NVIDIA as light yellow.
	new_mode=nvidia			# Define new mode.
	new_mode_formatted=NVIDIA	# Define new mode for formatted output.

elif [ $current_mode == 'nvidia' ]
then
	current_mode_formatted=NVIDIA	# Current graphics mode for fomatted output.
	current_color=$LIGHTYELLOW	# Used to format NVIDIA as light yellow.
	new_color=$LIGHTBLUE		# Used to format Intel as light blue.
	new_mode=intel			# Define new mode.
	new_mode_formatted=Intel	# Define new mode for formatted output.

else
	echo "${GREEN}There is a glitch in the Matrix.${RESET}"
fi

# Report the current graphics mode and call the switch() function to make the switch.
#

echo
echo -e "You are currently using ${current_color}${current_mode_formatted} ${RESET}graphics."
switch

# Exit successfully.
#

exit 0

# Written by jmatthewturner
# https://github.com/jmatthewturner
# https://www.youtube.com/jmatthewturner/
#
# https://gist.github.com/jmatthewturner/0a224a9e906a14e19b9230da8e17295b
# 

This is my first Bash script, so if I did anything stupid, please let me know!

Thanks for this, I just got a new Oryx Pro 6 and was debating on whether I should move to KDE Plasma, which I'm currently using on my old Dell, but wondered what I was going to lose, like graphics switching.