Great work on the fix! I can confirm it works for me on a Samsung NP530U3C Ultrabook.
The kernel is the one from proposed: 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux tim@t:~$ dpkg -l linux Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-==============-==============-============================================ ii linux 3.2.0.31.34 Generic complete Linux kernel. Please push this fix out with the next update! ** Tags removed: verification-needed-precise ** Tags added: verification-done-precise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1028151 Title: Samsung Series 900 Laptop brightness control issue (heavy flickering) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1028151/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs