Comment 24 for bug 1723619

I just tested 4.15-rc5 and the problem still persists.

A (bit painful) workaround if you don't have a choice:

- Boot liveCD, enable "expert mode" (F6 at boot menu"

- Edit the boot line to have "blacklist=nouveau modprobe.blacklist=nouveau" BOTH before AND after the "--" at the end of the line. The second part should transfer to your installed system.

- Boot into the live session. You now have horribly low resolution but it should allow you to run ubiquity.

- Install Ubuntu normally using horrible graphics

- Reboot. Hopefully your kernel cmdline parameters were saved and therefore you will reboot into a happy (still horrible) fresh system. Congratulations.

- If your reboot crashes odds are parts of the command line was not carried over. No worries, spam ESC to get in the grub menu then edit the kernel's entry to have both "blacklist=nouveau" and "modprobe.blacklist=nouveau". Boot into your ugly new system as previous point.

- Install the nvidia proprietary drivers: "sudo ubuntu-drivers" then install the appropriate nvidia-XXX package (was nvidia-384 in my case but it depends on your hardware).

- Reboot into hopefully glorious native resolution.