多显示器黑屏
如果NVIDIA驱动下外置显示器黑屏，请考虑：
sudo systemctl enable nvidia-suspend
sudo systemctl enable nvidia-resume
sudo systemctl enable nvidia-hibernate在/etc/modprobe.d/nvidia.conf中加入:
options nvidia NVreg_PreserveVideoMemoryAllocations=1
options nvidia NVreg_TemporaryFilePath=/var/tmp
然后在/etc/default/grub的启动参数(GRUB_CMDLINE_LINUX)里面添加resume=UUID=<swap-uuid>
运行下面的命令更新grub启动参数：
sudo grub-mkconfig -o /boot/grub/grub.cfg
sudo mkinitcpio -P