Since the original issue with -radeon is gone, and you're seeing it just with virtualbox (which uses a different video driver), I'm moving this bug to that.
** Package changed: xserver-xorg-video-ati (Ubuntu) => virtualbox-ose (Ubuntu) -- [RS690] widescreen blinks to black with virtualbox https://bugs.launchpad.net/bugs/374413 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs