I don't know if this has been mentioned before, but bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1283589 - [Samsung NP530U3C-A01] LID close, AC, and battery status events not produced anymore - seems to have some influence over this.
While the FN buttons do not work for keyboard backlight, the automatic sensor seems to be working. However, because of the issue described in the other bug, once the "event buffer" is full, the keyboard backlight sensor will not work anymore. This means that while solving the other bug doesn't produce working FN keys, it at least makes the keyboard backlight work again. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1203592 Title: Keyboard backlight does not work in Samsung Series 9 NP900X4C Status in “gnome-settings-daemon” package in Ubuntu: Confirmed Bug description: In Ubuntu 13.04, the keyboard backlight does not work in Samsung Series 9 NP900X4C. Adding the FN key mappings as described in https://help.ubuntu.com/community/SamsungSeries9 does show information in the notification area when pressing the keyboard backlight's + and - buttons, but: 1) The notification always identifies the backlight as "full max" 2) It has no effect on the backlight - it's always off When I first installed Ubuntu on this machine (12.10), even though the fn keys never worked I did have intermitent backlight functionality - the light sensor would sometimes work and I'd see light in the keyboard. I dual boot in Windows 8 and backlighting works there, so this is not a hardware issue. More discussion can be found here: http://askubuntu.com/questions/233312/how-to-make-keyboard-backlight- fn-buttons-work-in-samsung-series-9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1203592/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
