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I have a strange problem while using nvidia-prime comand. When I change the command prime-select like this

prime-select intel

and reboot the system, my laptop will display something like this and will result with endless loop with displaying information on screenshot below:

error

How to solve this problem?

  • a quick workaround if You are in a hurry to use ubuntu for work...alt+f2 to get into tty, login there and type sudo prime-select nvidia, after reboot You may further search for solutions with intel, good luck – PawełG May 29 '18 at 18:10
  • Unfortunately, with that error, you can't access any tty. You should reboot in rescue mode from GRUB, enter in the shell as root and run prime-select nvidia. Then follow my answer. I'm quite sure is the same exact problem. – velix May 29 '18 at 18:34
  • Hi, I did that with running ubuntu via recovery mode and then dpkg. I'm wondering how to make nvidia-prime packet to work correctly. – moerotor May 29 '18 at 21:02
  • If you're running in Xorg, it should be working. – velix May 29 '18 at 21:15
  • I mean I changed that parameter to prime-select nvidia and it works, but the point is I want to use my integrated intel card. – moerotor May 30 '18 at 18:29
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Got my same problem. You should switch to Xorg. I think is a 18.04 Wayland bug.

My gdm3 session was running in wayland. To check it:

 $ loginctl
 SESSION     UID  USER     SEAT     TTY             
       2    1000  velix    seat0    tty2            
      c2    1000  velix                                             
      c1     120  gdm      seat0    tty1

The command loginctl show-session <session-n> -p Type show the session type:

$ loginctl show-session c1 -p Type
Type=Wayland

To change it, edit the file /etc/gdm3/custom.conf and uncomment the line WaylandEnable=false.

After rebooting:

$ loginctl show-session c1 -p Type
Type=x11

See My question and answer for a little more details.

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