[Bug 939868] Re: Sony VPCEL2S1E, some hotkeys not working

[Thomas B Homburg]

Hello


The file /usr/share/doc/udev/README.keymap.txt.gz describe steps to find the udev key mapping for your device. And if you find the correct keymap, the file also details how you can submit your keymap to the udev developers and fix the keyboard for all matching laptops in the future.

I don't have the exact same Sony VPC model (VPCCB4C5E) as the others
mentioned in this bug.

Steps to fix keymap  (that I used)

1. Find keyboard input device:
  $ /lib/udev/findkeyboards
  ----
    AT keyboard: input/event2
    module: input/event3
  ----

  The keys you are fixing might be from either of the devices, so you
should do the following steps for each device.

2. Find scan codes:
  $ /lib/udev/keymap -i input/event3 # And press the key(-combo) you are fixing, I pressed fn+f1
  ---
    Press ESC to finish, or Control-C if this device is not your primary keyboard
    scan code: 0x0C   key code: f21
  ---

  The scan code here (0x0C) is wrong! (At least on my system). You have to substract 7 from the code
  to get the usable value (for the keymap): 0x0C - 7 = 0x05

3. Find the key code:
  /usr/include/linux/input.h
  Search for the constants: "KEY_" and convert the rest to lowercase:
    KEY_F21 > f21
    KEY_BRIGHTNESSDOWN > brightnessdown
  Touchpad toggle: Do not use the KEY_touchpad_toggle. Instead use the f21 for toggling touchpad.
  This took me a long time to figure out.

4. Construct the keymap: /etc/udev/keymaps/module-sony-vpc
  Look at /lib/udev/keymaps/module-sony-vgn (or the attached module-sony-vpc) as an example.
  The format is:

    <scan code> <key code>

   eg. 
   0x05 f21
   0x0A brightnessdown

5. Build the udev rule. The udev rule matches the laptop and execute the keymap on boot. My attached rule: sony-vpc.conf
    should match all Sony VPC laptops: The "VPC*" pattern should match /sys/devices/virtual/dmi/id/product_name

6. The result should be:
  /etc/udev/keymaps/module-sony-vpc
  /etc/udev/rules.d/sony-vpc.rules

** Attachment added: "sony vpccb... keymap"
   https://bugs.launchpad.net/ubuntu/+source/udev/+bug/939868/+attachment/3253278/+files/module-sony-vpc

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https://bugs.launchpad.net/bugs/939868

Title:
  Sony VPCEL2S1E, some hotkeys not working

Status in “udev” package in Ubuntu:
  Confirmed

Bug description:
  Trying with Ubuntu Daily 12.04 (20/2/2012),

  Hotkey Fn+F1 (disable touchpad): Not working
  Hotkey Fn+F2 (mute/unmute sound): Working
  Hotkey Fn+F3/F4 (audio lower/higher): Working
  Hotkey Fn+F5/F6 (brightness lower/higher): works, but also invokes the "enable/disable external monitor" (also changes resolution?)
  Hotkey Fn+F7 (enable/disable external monitor): works but also appears to change resolution (using with HDMI)
  Hotkey Fn+F12 (hibernate): Works fine (with open-source graphics driver, hangs if FGLRX is used)

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: udev 175-0ubuntu5
  ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
  Uname: Linux 3.2.0-17-generic x86_64
  ApportVersion: 1.92-0ubuntu1
  Architecture: amd64
  Date: Fri Feb 24 00:07:41 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120220)
  MachineType: Sony Corporation VPCEL2S1E
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no username)
   LANG=el_GR.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-17-generic root=UUID=d729a379-b421-4cd5-80fc-a68a8d0678a3 ro quiet splash vt.handoff=7
  SourcePackage: udev
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/13/2011
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: R0160E3
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnInsydeCorp.:bvrR0160E3:bd06/13/2011:svnSonyCorporation:pnVPCEL2S1E:pvrC90294ZC:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: VPCEL2S1E
  dmi.product.version: C90294ZC
  dmi.sys.vendor: Sony Corporation

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