Dave Peck, as per http://www.sony.co.uk/support/en/product/SVE1712C5E/updates an update is available for your BIOS (R0170D6). If you update to this, does it change anything?
If not, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Thank you for your understanding. ** Tags added: bios-outdated-r0170d6 needs-upstream-testing regression- release ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Summary changed: - Sony backlight brightness controls not working in 12.10 + [Sony VAIO SVE1712C5E] Backlight brightness controls not working in 12.10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1088992 Title: [Sony VAIO SVE1712C5E] Backlight brightness controls not working in 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1088992/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs