Comment 36 for bug 1087534

I confirm that the method of Florian works. It's the same command as Unity Tweak uses with 'background blur'.
If it is possible, and nothing would break, why wouldn't you deactivate blur by default? Otherwise, you can disable all intel video cards blur..
As Frantisek indicates, this is against the words of Mark Shuttleworth. Because it is not one operating system anymore for all different devices. ;)