(In reply to comment #51) > Created attachment 62030 [details] [review] > possible fix > > another patch to try.
This patch was tier with kernel 3.4.0 When system is booting, and going into KMS on radeon driver no output on the screen (backlight goes to full power and screen is blank) No kernel .log available. machine locks up hard, and need to be power- cycled -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/840140 Title: Graphical corruption then black screen using an ATI Radeon 6790 card on boot To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/840140/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs