I am also affected: Xubuntu 12.04 i386 with ATI card. Switching to "True Color" makes the password entry dialog visible again, but the screen saver (gl slide show) won't be started then. Instead, the screen turns dark and bright repeatedly.
I am also affected: Xubuntu 12.04 i386 with ATI card. Switching to "True Color" makes the password entry dialog visible again, but the screen saver (gl slide show) won't be started then. Instead, the screen turns dark and bright repeatedly.