$ uname -a Linux ironhide 3.1.0-999-generic #201110040905 SMP Tue Oct 4 09:10:44 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
$ cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.1.0-999-generic root=/dev/mapper/ironhide-root ro quiet splash vt.handoff=7 $ xset s activate Result: without acpi_backlight=vendor display turns black (not sure if the backlight is off or not) and comes back on any activity. Also, I am unable to adjust the display brightness. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/872652 Title: Display Hang With acpi_backlight=vendor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/872652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
