Confirmed on an nVidia 9600M GT using the proprietary nvidia module. Updated to 14.04 yesterday and this is the first time I've seen this.
Switching to TTY1 and coming back replaced the big black boxes with big smooth gradient boxes. Running
DISPLAY=:0 unity --replace
on TTY1 fixed the issue.
Confirmed on an nVidia 9600M GT using the proprietary nvidia module. Updated to 14.04 yesterday and this is the first time I've seen this.
Switching to TTY1 and coming back replaced the big black boxes with big smooth gradient boxes. Running
DISPLAY=:0 unity --replace
on TTY1 fixed the issue.