Comment 37 for bug 541511

what if we "give up" on coherency of the first n flushes? something like the screen test of arcade machines, except that we just don't check if test is OK, pretending that coherency becomes consistent after that; I have often found that the last graphics contents of the LVDS pipe are persistent between a reboot (when using a liveCD, for example) and you can actually see the last screenshot a while before screen gets properly cleared and initialized.

Sorry but I am shooting in the dark here