Comment 34 for bug 1575437

This is really just a derivative of what has already been posted here, but I just completed a fresh install of 16.04 from flash drive and I thought that the exact steps I used would be useful to some people.

When you boot from the usb drive for a fresh install highlight the "Install Ubuntu" option and press the "e" key to edit this configuration.

Add the "nouveau.modeset=0" option on the linux line right before the "quiet" option so that it looks like the following.

linux /casper/vmlinuz.efi file=/cdrom/pressed/ubuntu.seed boot=casper only-ubiquity nouveau.modeset=0 quiet splash ---

Press F10 to boot and start the install.

Complete the install as normal.

When the installation is complete and it boots highlight the Ubuntu option in the grub menu and press the "e" key again.

Edit the linux line to add the "nouveau.modeset=0" parameter again.

After this boot succeeds edit the /etc/default/grub file and edit the following line.

GRUB_CMDLINE_LINUX_DEFAULT="nouveau.modeset=0 quiet splash"

Run sudo update-grub once this is complete.

Now this parameter should be set every time you boot.

I agree that this is just a workaround and not a true fix. Hopefully the fix isn't too far away.