I just tried to switch to the nouveau driver (from Nvidia proprietary) on my Ubuntu 14.04 machine, and now I can't access anything. When I start the computer I hear the drumroll when I reach the login screen, but all I see is some weird test screen (squares in different colors, changes every few seconds).

ctrl+alt+fx doesn't work, so I have no way to get a tty. I'm currently writing this from a live usb.

Is there some way for me to change the driver if all I have access to is the filesystem (from the live usb)? Or am I totally screwed?

  • Disable the GPU in your BIOS if a laptop or remove the card if a PC. What does that do? – Fabby Mar 24 '15 at 22:25
  • When I rebooted from the live USB, the computer then booted from my usual drive and it suddenly worked fine. When I rebooted without the live usb connected, it all crashed down again. So basically I was able to get to my normal computer by restarting from the live usb, and when at my normal desktop I could switch back to the Nvidia driver. – Lars Nyström Mar 25 '15 at 13:24
  • I'm confused... Is NVidia enabled and it works now? Or disabled and it works? – Fabby Mar 25 '15 at 18:11
  • The Nvidia driver is now installed and it works. It didn't work with the Nouveau driver until when I booted from a live usb and then restarted from that session. I'm confused too. – Lars Nyström Mar 26 '15 at 9:15
  • OK! That's expected behaviour! The nouveau drivers don't work yet on all hardware with all features... See the Nouveau feature matrix So you did the right thing from the start and probably cold booted in the mean time... ;-) – Fabby Mar 26 '15 at 18:58

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