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Difference between revisions of "Make.conf/VIDEO CARDS/NVIDIA and Nouveau Driver Switching"
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The use of libglvnd was introduced with Funtoo Release 1.4. libglvnd provides for the automatic detection and configuration of the graphics driver during boot. When more than one driver is available for the same card, the configuration depends on the driver detected. Previous to Release 1.4, the proper configuration was provided by 'eselect opengl'. The selection between the nvidia and nouveau driver for a Nvidia graphics card is such a case. | The use of libglvnd was introduced with Funtoo Release 1.4. libglvnd provides for the automatic detection and configuration of the graphics driver during boot. When more than one driver is available for the same card, the configuration depends on the driver detected. Previous to Release 1.4, the proper configuration was provided by 'eselect opengl'. The selection between the nvidia and nouveau driver for a Nvidia graphics card is such a case. | ||
Switching drivers from the boot menu requires blacklisting of all graphics kernel modules (including drm) and configuring the graphics from an init daemon before Xorg is started. | Switching drivers from the boot menu requires blacklisting of all graphics kernel modules (including drm) and configuring the graphics from an init daemon before Xorg is started. The kernel parameter 'nomodeset' should not be used as this will load kernel module drm before the desired driver is configured. | ||
==System Profile== | ==System Profile== | ||
Check your system profile with ego. Both the {{c|gfxcard-nouveau}} mix-in and either the {{c|gfxcard-nvidia}} or{{c|gfxcard-nvidia-legacy}} mix-in need to be in your profile and installed. Check the information [[ | Check your system profile with ego. Both the {{c|gfxcard-nouveau}} mix-in and either the {{c|gfxcard-nvidia}} or{{c|gfxcard-nvidia-legacy}} mix-in need to be in your profile and installed. Check the information [[Make.conf/VIDEO_CARDS|here]] and [[Package:NVIDIA_Linux_Display_Drivers|here]]. | ||
== boot-update == | == boot-update == |
Revision as of 05:13, September 23, 2019
This page describes how to switch between nvidia and nouveau graphics drivers on the same computer and kernel from the boot menu.
Background
The use of libglvnd was introduced with Funtoo Release 1.4. libglvnd provides for the automatic detection and configuration of the graphics driver during boot. When more than one driver is available for the same card, the configuration depends on the driver detected. Previous to Release 1.4, the proper configuration was provided by 'eselect opengl'. The selection between the nvidia and nouveau driver for a Nvidia graphics card is such a case.
Switching drivers from the boot menu requires blacklisting of all graphics kernel modules (including drm) and configuring the graphics from an init daemon before Xorg is started. The kernel parameter 'nomodeset' should not be used as this will load kernel module drm before the desired driver is configured.
System Profile
Check your system profile with ego. Both the gfxcard-nouveau
mix-in and either the gfxcard-nvidia
orgfxcard-nvidia-legacy
mix-in need to be in your profile and installed. Check the information here and here.
boot-update
The most important change: edit /etc/boot.conf:
/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
}
Next, run boot-update.
After boot-update has been run, you should have something like:
root # grep menuentry /boot/grub/grub.cfg | wc -l 2 root # grep menuentry /boot/grub/grub.cfg menuentry "Funtoo Linux [nouveau] - vmlinuz-2.6.32.71_p14-rh" { menuentry "Funtoo Linux [nvidia] - vmlinuz-2.6.32.71_p14-rh" {
xcfgmaker deamon
root # mkdir /etc/X11/video/; root # cd /etc/X11/video/; root # nano 10-monitor.conf.nouveau # make default config for nouveau. or copy existing config… root # nano 10-monitor.conf.nvidia # also for nvidia
Then create a new daemon. Edit the file /etc/init.d/xcfgmaker:
- !/sbin/openrc-run
- by http://wiki.sabayon.org/index.php?title=HOWTO:_Create_a_boot_option_for_easy_dual_to_single_display_switching
- To be placed in /etc/init.d/
- Run Command: rc-update add xcfgmaker boot
depend() {
need localmount before xdm-setup before xdm before alsasound
}
start() {
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;
/sbin/modprobe drm /sbin/modprobe nouveau; else 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;
/sbin/modprobe nvidia-drm; fi sleep 5 eend 0 else ebegin "Xorg file missing. Exitting" eend 0 fi fi
}
Do not forget:
root # chmod +x /etc/init.d/xcfgmaker root # rc-update add xcfgmaker boot