head -3 /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
Try this:
sed 's/quiet/quiet radeon.modeset=0/g' -i /etc/default/grub
Type: Posts; User: bandeross83
head -3 /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
Try this:
sed 's/quiet/quiet radeon.modeset=0/g' -i /etc/default/grub