More info as I can reproduce this bug. Workarounds on adjusting brightness via writing values to /proc/acpi/video/VGA/LCD/brightness works though.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/669411 Title: brightness key combinations disables entire Linux on Samsung R439 Laptop -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs