Hi, I have the same problem. there is a workaround although.
add "acpi_osi=" at the and of the kernel boot parameters. to permanently do this edit /etc/default/grub as root and add "acpi_osi=" at the end of GRUB_CMDLINE_LINUX_DEFAULT then run "update-grub" as root after that brightness and all other hotkeys work but the ambient light sensor is no longer detected. But this is not a big problem since there is no standard ambient light regulation of screen brightness anyway -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1348890 Title: Asus UX32LN: Brightness keys Fn+F5 and Fn+F6 don't generate evdev event Status in “linux” package in Ubuntu: Confirmed Bug description: Hello Community, It seems brightness keys don't work with latest Ubuntu 14.04 LTS for laptop Asus Zenbook UX32LN. sudo dmidecode -s bios-version UX32LN.203 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1348890/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp