Hi, thanks for your interest. This issue is independent from ati or xserver, because it happens during the boot time, before loading modules.
After a long research with kernel list I discovered that this bug comes from a conflict between video acpi and HP envy Bios model when setting brightness to the initial value. It's a kernel/hp main tree issue. Now, there is a patch available from the main kernel source, that is shipped with kernel 2.6.38. It adds a backlight option in the boot. Here the link: https://bugzilla.kernel.org/show_bug.cgi?id=21212 So, you can close this bug report. Thanks for your interest. ** Bug watch added: Linux Kernel Bug Tracker #21212 http://bugzilla.kernel.org/show_bug.cgi?id=21212 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/651590 Title: ATI Radeon HD 5850 blank screen during boot _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
