I have been having issues installing Ubuntu 14.04 13.10 12.04 on my Dell XPS 15z from USB. 32-bit installs fine off USB. I have seen some answers on here trying to solve it and have attempted these solutions. So here is my procedure:
Install USB using unetbootin
Reboot from USB
If I click try or install my computer waits a few seconds and then puts the screen in the top left 1/16 of the screen and freezes. My Caps Lock stops lighting up when clicked at this point and I have to hold the power down to reboot.
If I click the second try from live (it gives me the option twice) it will boot Ubuntu and freeze as soon as I type a key. However, the mouse works fine (prior to me touching a key that is). I must reboot by holding the power button.
I tried to do
acpi=offbut no change
Does anyone have any suggestions?