I have installed Ubuntu 14.04 on my ThinkPad W520 with a NVidia Quadro 1000M graphics card. I then switched over to a NVidia proprietary driver. However, when I plugged in my second monitor through a VGA cable, it simply does not show up. Ubuntu can not find it and
xrandr shows that VGA1 is disconnected. NVidia X Server Settings also doesn't show anything.
Thanks in advance
Note: Switching to a non-propriety driver like X.org works, but the second screen glitches out. The laptop monitor is just fine.