I have added the requested option to /etc/modprobe.d/sony.conf and rebooted the laptop. You will find the output of the dmesg command attached to this comment.
** Attachment added: "dmesg output using sony-laptop debug=1" http://launchpadlibrarian.net/25795647/dmesg.txt -- [Jaunty] Brightness buttons don't work on Sony VGN-Z540 https://bugs.launchpad.net/bugs/361781 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
