Create a boot option for easy nvidia or nouveau display driver switching

From Funtoo
This is the approved revision of this page, as well as being the most recent.
Jump to: navigation, search

This howto describes how to use nvidia and nouveau drivers on the same computer and kernel.

Note: You must know how to install x11-drivers/nvidia-drivers and x11-drivers/nouveau (references at the end of the page). First, you need to configure your kernel and install nvidia drivers and nouveau. We assume that this stage is successfully passed.

[edit] boot-update

Next, the most important change. Edit /etc/boot.conf:

boot {
	generate grub
	default "Funtoo Linux [nvidia]" 
	# or
	# default "Funtoo Linux [nouveau]"
	timeout 3 

color {
	normal cyan/blue
	highlight blue/cyan

display {
	#gfxmode 1280x800
	#font unifont.pf2

"Funtoo Linux [nvidia]" {
	kernel vmlinuz[-v]
	params += ro console=tty1 quiet <other standard boot options>
	params += nouveau.blacklist=true vga=791 # nouveau.blacklist=true is important
	# or
	# params += nouveau.blacklist=true video=uvesafb:1440x900-8,mtrr:2

"Funtoo Linux [nouveau]" {
	kernel vmlinuz[-v]
	params += ro console=tty1 quiet <other standard boot options>
	params += nvidia.blacklist=true # nvidia.blacklist=true is important

After boot-update with the new settings, you should have something like:

# grep menuentry /boot/grub/grub.cfg | wc -l
# grep menuentry /boot/grub/grub.cfg
menuentry "Funtoo Linux [nouveau] - vmlinuz-" {
menuentry "Funtoo Linux [nvidia] - vmlinuz-" {

[edit] xcfgmaker deamon

# mkdir /etc/X11/video/;
# cd /etc/X11/video/;
# nano 10-monitor.conf.nouveau # make default config for nouveau. or copy existing config… 
# nano 10-monitor.conf.nvidia # also for nvidia

Then create a new daemon. Edit the file /etc/init.d/xcfgmaker:


# by
# To be placed in /etc/init.d/
# Run Command: rc-update add xcfgmaker boot

   need localmount
   before xdm-setup
   before xdm
   before alsasound


   cmdline_display_mode_exist=$(cat /proc/cmdline | grep -e "nouveau.blacklist=" -e "nvidia.blacklist=")
   display_mode_nvidia_exist=$(ls /etc/X11/video/ | grep "10-monitor.conf.nvidia")
   display_mode_nouveau_exist=$(ls /etc/X11/video/ | grep "10-monitor.conf.nouveau")
   cmdline_display_mode=$(cat /proc/cmdline | awk -Fnvidia.blacklist= '{print $2}' | awk '{print $1}')
   if [ -n "$cmdline_display_mode_exist" ]; then
      if [ -n "$display_mode_nvidia_exist" ] && [ -n "$display_mode_nouveau_exist" ]; then
            #Choose the xorg file to be copied over
            if [ "$cmdline_display_mode" == "true" ]; then
               ebegin "Configuring X display with nouveau"
               cp /etc/X11/video/10-monitor.conf.nouveau /etc/X11/xorg.conf.d/10-monitor.conf
               eselect opengl set xorg-x11 >/dev/null 2>&1;
               ebegin "Configuring X display with nvidia"
               cp /etc/X11/video/10-monitor.conf.nvidia /etc/X11/xorg.conf.d/10-monitor.conf
               eselect opengl set nvidia >/dev/null 2>&1;
         sleep 5
         eend 0
         ebegin "Xorg file missing. Exitting"
         eend 0


Do not forget:

# chmod +x /etc/init.d/xcfgmaker
# rc-update add xcfgmaker boot

[edit] Additional Resources