Comment 3 for bug 1375223

I use a dell xps 13 9343 with a 3200x1800 screen res and adding the command xserver-command=X -dpi 144 to the lightdm.conf results in Ubuntu booting in low res troubleshooting mode - I never get to the unity-greeter screen. From the logs I gather that X shuts down. I had to boot into recovery mode and remove that line to be able to login.