It seems that the function keys trigger /etc/acpi/sonybright.sh which requires /proc/acpi/sony/brightness in order to get the brightness level, but /proc/acpi/sony/brightness is missing in Gutsy at the moment
-- In Fiesty Sony Vaio Brigthness Fn keys stopped working https://bugs.launchpad.net/bugs/90708 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs