The easiest way to change the keyboard brightness is to use the UPower D-Bus interface. Desktop environments that use UPower, like GNOME or KDE, work out the box and do not need any tool or script to register the keys and change the keyboard brightness. Keyboard backlight should work automatically with any recent kernel. In case it is not working directly, you need to set the kernel parameter acpi_osi= (the space is required). The brightness is managed via hardware, so it should work across all DE's. Screen backlight should work with any recent kernel (after 3.7). This table shows the function keys, their intended function, what keycode (if any) X recognizes and whether the function key operates at the BIOS level or if it needs a shortcut. For some of the keys the function operates on a BIOS level and no shortcut is needed. For that it is often necessary to add a keyboard shortcut or to use a desktop shell with built-in shortcut support for the keycode in question. It does not means that the keymap is linked to the functionality. Note: A working keymap means that there is some output in xev when the key combination is pressed OR that the functionality is built in and "just works". Make sure to boot the USB in EFI-Mode, to easily install the bootloader later. Press Escape again on reboot: This time the USB bootable device should appear in the menu. If the USB bootable device is not listed, enter the configuration menu and directly press F10 to save. To prepare a UEFI USB device, read UEFI#Create UEFI bootable USB from ISO. Since the UX31A uses UEFI and GPT, make sure to also read the UEFI, GPT and Arch boot process#Boot loader pages. To install Arch Linux on UX31A, you can follow the official Installation guide. See previous generation ASUS Zenbook UX31E page that has mostly orthogonal information to those here (may be only partially applicable to UX31A) This page contains instructions, tips, pointers, and links for installing and configuring Arch Linux on the ASUS Zenbook UX31A and UX21A Ultrabooks. (Discuss in Talk:ASUS Zenbook Prime UX31A) Hardware Reason: Also avoid maintaining scripts and programs here.
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