For me, it does work after change of BACKLIGHT_CONTROL using xrandr to combination (or any different from kernel)
** Attachment added: "intel-backlight-info.txt" http://launchpadlibrarian.net/18889007/intel-backlight-info.txt -- Unable to adjust screen brightness on recent Sony Vaio notebooks, Intel GMA adapter https://bugs.launchpad.net/bugs/173652 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs