I'm running Ubuntu 14.04 LTS and roughly 50% of the time when I log into my account, the fonts in the GUI are not smoothed/antialiased. Furthermore, when moving the mouse the the right edge of the screen, the desktop pans across the screen and a large black space appears on the monitor.
I have attached two screenshots, the first is not entirely accurate because on my monitor the black area is on the other side of the screen. Notice the unsmoothed fonts in the menu.
The second shows the correct appearance of the fonts and moving the mouse to the edge of the screen does not pan.
My question is: is this a known bug and is there a solution or workaround to prevent this from happening other than logging out/in?
My graphics card is a nVidia GT630 on Nvidia binary driver 331.113 if it could be graphics related.