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 Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/651590 Title: ATI Radeon HD 5850 blank screen during boot -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
