Got a new PC with a GTX 1080 TI and an i7-8700K Intel core. I installed ubuntu and after specifying nomodeset everything worked. So far so good. Next, I wanted to install the driver for my graphics card but no matter what I do, when I reboot I get stuck at the login screen.

  • I tried deleting .Xauthority but it doesn't change anything.
  • .xsession-erros tells me

    openConnection: connect: No such file or directory cannot connect to brltty at :0 gnome-session (Unity) main process (2235) terminated with status 1

  • Also tried different ubuntu version (16.04 and 17) as well as different drivers (the proprietary and the open source ones)
  • Tried disabling nouveau
  • Setting permissions on /tmp
  • Updating all packages
  • Using gdm instead of lightdm

Maybe the problem is that I have the onboard graphics card and the NVIDIA card?


Solved it! I have two HDMI outputs (one from the motherboard and one from the graphics card). I was using the one from the motherboard and after switching to the one from the graphics card everything worked perfectly.

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