I got problem with changing users. I got two user accounts, one root and one normal user. When normal user login and after a while lock screen appears or you try to change user and you press change user, you got a black screen, no back-light or nothing but i can hear Ubuntu tune playing.
After using terminal command startx i end up looking root user background or got an error message that tells unable to connect to x server: Connection refused. Only reboot helps or it's only thing i know how to do it. :)
So is this something i can fix by reinstalling something or is this something i should report as a bug?
Ubuntu 13.10, Gallium 0.4 on AMD ARUBA(using one graphic card..), Dual graphics AMD Radeon hd7640g + 7600m.
Computer Samsung Series3 np355v5c-s08se