This persists during login and desktop view. It seems to happen at random and the only way to solve it is to reboot the laptop (sometimes up to 10 times or waiting 5 minutes) I'm running Ubuntu 13.04 64bit, but I noticed the exact same issue when trying out Mint 15 (Windows 7 has no problems). The laptop is a HP Envy 14 Spectre This is a picture of the initial boot screen:
And this is one, when I get past the login screen:
Any ideas guys and girls?