独立显卡安装黑屏问题

LightDM

For the LightDM display manager:

/etc/lightdm/display_setup.sh

#!/bin/shxrandr --setprovideroutputsource modesetting NVIDIA-0xrandr --auto

Make the script executable:

# chmod +x /etc/lightdm/display_setup.sh

Now configure lightdm to run the script by editing the [Seat:*] section in/etc/lightdm/lightdm.conf:

/etc/lightdm/lightdm.conf

[Seat:*]display-setup-script=/etc/lightdm/display_setup.sh

Now reboot and your display manager should start.

转载自：https://wiki.archlinux.org/index.php/NVIDIA_Optimus