The kernel v3.17-rc6-utopic has this problem too. ** Tags added: apport-collected
** Description changed: The keyboard backlight of my SONY VAIO SE15 does not work. This is the corresponding dmesg output [ 21.500543] sony_laptop: handle 0x014b: keyboard backlight setup already done for 0x0143 [ 21.500546] sony_laptop: couldn't set up keyboard backlight function (-16) [ 21.500774] sony_laptop: brightness ignored, must be controlled by ACPI video driver [ 21.500785] sony_laptop: SNC setup done. daniel@daniel-laptop:~$ lsb_release -rd Description: Ubuntu Utopic Unicorn (development branch) Release: 14.10 daniel@daniel-laptop:~$ uname -a Linux daniel-laptop 3.16.0-16-generic #22-Ubuntu SMP Wed Sep 17 18:47:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux + --- + ApportVersion: 2.14.7-0ubuntu2 + Architecture: amd64 + CurrentDesktop: Unity + DistroRelease: Ubuntu 14.10 + InstallationDate: Installed on 2013-11-26 (305 days ago) + InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) + Package: linux (not installed) + Tags: utopic + Uname: Linux 3.17.0-031700rc6-generic x86_64 + UnreportableReason: The running kernel is not an Ubuntu kernel + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo + _MarkForUpload: True -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1372618 Title: Sony vaio keyboard backlight does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1372618/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs