You have been subscribed to a public bug: Toshiba satellite A660 backlight just never worked on ubuntu.
Here is an outline of some of the LEDS in a toshiba http://i.imgur.com/l54s5CP.jpg When i press Fn+Z the ubuntu keyboard LED notification shows up, however nothing changes. so i navigated to /sys/devices/pci0000:00/0000:00:1c.4/0000:16:00.0/firmware_node/subsystem/devices/TOS1900:00/leds/toshiba::illumination/device/leds/toshiba::illumination found files brightness device max_brightness power subsystem trigger uevent when i changed the value in brightness from 0 to 1 LED 1, 2, and 3 in the above picture turns on, and led 1 turns off when touch bad is off. However there is no keyboard backlight.upon boot the backboard backlight works while posting and shutdown when grub loads. When i disable acpi the keyboard backlight works however ill lose other functionalities like brightness. Any way to fix it? There is also another directory. /sys/devices/pci0000:00/0000:00:1c.4/0000:16:00.0/firmware_node/subsystem/devices/TOS1900:00/leds/toshiba::illumination/device/leds/toshiba::illumination/subsystem/mmc0:: with files brightness device max_brightness power subsystem trigger uevent nothing happens when brightness value changes. LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch Distributor ID: Ubuntu Description: Ubuntu Raring Ringtail (development branch) Release: 13.04 Codename: raring Linux mouhanad-Satellite-A660 3.8.0-18-generic #28-Ubuntu SMP Thu Apr 11 19:38:55 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux #Problem also exists in older version of ubuntu, new kernel in 13.04 does not solve the problems. xev shows a key being pressed and being mapped to kbdbacklight. A a notification that keyboard is being turned on appears when Fn+Z is pressed. Also unlike other manufactures toshiba doesn't have brightness on backlit keyboards, its either on or off or a timer. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment keymap raring -- [keymap] Toshiba satellite A660: backlight key does not work https://bugs.launchpad.net/bugs/1169386 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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
