I just installed Ubuntu 13.10 on my Dell XPS L502X laptop last night. I set it up as a dual boot with Windows 8.1. I was testing the GUI to make sure all features work.
Examples: Software Updater for the latest updates, tweaking the System settings to my personal taste, setting up wireless network, etc.
The only things I tweaked were uninstalling Thunderbird and removing the mail icon on the system bar, and changed the wireless icon on my laptop from blinking light -> solid light.
I click on the power icon in the upper right corner of the system bar. I scroll down to Guest session to switch user. When I click switch user, my monitor goes black. Nothing happens. Pressing "enter" or any keys on the keyboard does not change or manipulate the screen. The only thing I can do is use the command:
It reboots the laptop
Has this happened to anyone?