I am trying to install cuda-9.0 for my machine. So, I followed the following steps:

  1. Open a terminal using Alt+Ctrl+F1
  2. Log in using my credentials
  3. Run sudo lightdm stop to kill X

After this I lost my terminal session and fell back to my GUI instead! Also I don't have the ability to switch to a terminal using either Alt+Ctrl+F1-F6.

Is there a reasonable explanation for that? It seems that my terminal was GUI based (how is that possible anyway?) and got killed but my actual GUI had different pid and did not?

I am using Ubuntu 16.04

  • If you're using 16.04, then you should probably be using the systemd command sudo systemctl stop lightdm.service or (perhaps better) sudo systemctl isolate multi-user.target – steeldriver May 16 '18 at 13:56
  • I don't get it. This will work on my terminal? And why is terminal being killed? – Eypros May 16 '18 at 14:26
  • My guess is that sudo lightdm stop actually starts a new instance of lightdm – steeldriver May 16 '18 at 15:06

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