https://bugs.freedesktop.org/show_bug.cgi?id=33348
--- Comment #24 from Dawit Alemayehu adawit@kde.org 2011-06-19 12:07:34 PDT --- (In reply to comment #23)
Added both your options and looking at the cat command can see no difference and in fact cold boot still results in an unusable unity. A windows restart is still OK.
I get the same display corruption with those options as well set as well. It does not matter if you set both or one at a time. For me the corruption is now better than what it was a couple of revisions back, but it is still unusable.