$ uname -a Linux ironhide 3.1.0-0301rc9-generic #201110050905 SMP Wed Oct 5 09:15:03 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
$ cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.1.0-0301rc9-generic root=/dev/mapper/ironhide-root ro quiet splash acpi_backlight=vendor vt.handoff=7 $ xset s activate Result: display turns off and does not resume until I close the lid, wait for system suspend and then open the lid for a system resume. -- 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