[Bug 1012365] Re: Samsung Series 9 laptop 900X3C not all keys correctly translated

[Jerker Nordh]

"Note that this keeps the "silent mode" key as "prog3", as nothing in
the desktop actually would do anything with KEY_SILENTMODE."

Actually when the samsung laptop module is loaded it is possible to
switch the "performance mode" of the laptop, which for example I have
bounded to the "silent mode"-button since that is exactly what is
accomplishes. (Slows down the performance which lowers fan-noise)

Of course by default it wouldn't do anything for a user, but by exposing
the correct name it could be easier in the future when/if more laptops
ship with similar functionality.

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Title:
  Samsung Series 9 laptop 900X3C not all keys correctly translated

Status in “systemd” package in Ubuntu:
  Fix Committed

Bug description:
  There isn't a correct translation from scancodes to keycodes in place
  for the 900X3C laptop, for more information see
  "http://jablonskis.org/2012/linux-and-samsung-series-laptop-9-fn-
  keys/", however the codes on that page are not correct for 900X3C.

  /lib/udev/keymap -i input/event3 gives the following information

  (Fn+F1..F12)

  scan code: 0xCE   key code: kpplusminus
  scan code: 0x89   key code: brightnessdown
  scan code: 0x88   key code: brightnessup
  scan code: 0x82   key code: switchvideomode
  scan code: 0xF7   key code: f22
  scan code: 0xA0   key code: mute
  scan code: 0xAE   key code: volumedown
  scan code: 0xB0   key code: volumeup
  got scan code event 0x97 without a key code event
  got scan code event 0x96 without a key code event
  scan code: 0xB3   key code: prog3
  got scan code event 0xD5 without a key code event

  The correct functionality would be:
  Fn+F1: "Easy Settings"
  Fn+F2: Brightness Down (OK)
  Fn+F2: Brightness Up (OK)
  Fn+F3: Switch Internal/External monitor
  Fn+F4: Touchpad On/off
  Fn+F6: Mute (OK)
  Fn+F7: Vol Down (OK)
  Fn+F8: Vol Up (OK)
  Fn+F9: Keyboard backlight down
  Fn+F10: Keyboard backlight up
  Fn+F11: Silent Mode (toggle performance levels for reduced noise)
  Fn+F12: Wireless on/off

  $ lsb_release -rd
  Description:	Ubuntu 12.04 LTS
  Release:	12.04

  $ apt-cache policy udev
  udev:
    Installed: 175-0ubuntu9
    Candidate: 175-0ubuntu9
    Version table:
   *** 175-0ubuntu9 0
          500 http://se.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
          100 /var/lib/dpkg/status

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