Ubuntu 13.10, Thinkpad x230, Fn keys not working after upgrade

Status changed to 'Confirmed' because the bug affects multiple users.

here, not only brightness, but all fn keys have stopped working,

thinkpad edge 13

This morning after reboot the fn brightness keys worked again. I have the latest updates installed.

Here on a Samsung RF511, same issue. After update to 13.10 all Fn keys are dead within Ubuntu. Funnily the touchpad on/off switch (Fn+F10) seems to work (switches TP on/off), but Ubuntu does not recognize it nor give any notification.

Here on my Samsung NP530U3B (Intel Sandybridge 'ultrabook') running UbuntuGNOME 13.10, recently Fn keys for increase/decrease audio volume stoped working. On the other hand, Fn keys for increasing/decreasing brightness, as well as Fn keys for enabling/disabling audio, touchpad, wireless network, setting fan speed, page up/page down, home/end and print screen are working normally, including the respective notifications. The only problem with Fn keys regards increasing/decreasing audio volume.

Fresh install of 13.10 on Thinkpad x230 here. Fn keys all work.

Same here on Dell V131. Fn keys seem to stop working after suspend.

Me, too. On ThinkPad Edge Type 0328-2TA. Help us, please!

Same here: Fn + key not working at all, running Kubuntu 13.10 with latest (to date) updates, even after reboot.

There is a page on HotKey troubleshooting. If you still have this issue please go through the troubleshooting procedure so we can get a better idea where the bug is coming from..

https://wiki.ubuntu.com/Hotkeys/Troubleshooting

This should be fixed for the Thinkpad X230 in the upstream 3.14-rc4 kernel by these two commits:

commit bd8ba20597f0cfef3ef65c3fd2aa92ab23d4c8e1 - ACPI / video: Filter the _BCL table for duplicate brightness values
commit 0e9f81d3b7cd0649a3bc437391b6a0650f98f844 - ACPI / video: Add systems that should favour native backlight interface

The first one has been cc'd to the stable kernel series. A PPA of the 3.14-rc4 kernel is available at http://kernel.ubuntu.com/~kernel-ppa/mainline/ and instructions on how to install an uninstall it are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds