使用 xrandr 并没有用，装了 nviDIA 驱动导致 ubuntu 导致桌面 dock 显示不了，求双显示屏方案。
伊谢尔伦2017-04-24 09:11:35
It should be that you installed xrandr but it doesn’t work. I don’t use the unity desktop, but I always use xrandr for multi-screen display.
The dock cannot be displayed and it has nothing to do with multi-screen display.
See Multihead and xrandr for solutions
