just a comment for those that tried editing the grub file at boot, in my case i edited the grub and added acpi_backlight=vendor, however did not see any effect. having read a few other bug reports I decided to try this again, however using the reverse brightness light keys, and got some success.
so it appears that on Intel machines the backlight is inverted ! hope this helps -- 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: screensaver backlight stuck off, system looks hung To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-settings-daemon/+bug/872652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
