[Bug 694630] Re: Hotkeys (Fn) don't work correctly - Samsung QX410 notebook

[Ubuntu QA Website]

This bug has been reported on the Ubuntu laptop testing tracker.

A list of all reports related to this bug can be found here:
http://laptop.qa.ubuntu.com/qatracker/reports/bugs/694630

** Tags added: laptop-testing

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Title:
  Hotkeys (Fn) don't work correctly - Samsung QX410 notebook

Status in “udev” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: udev

  Ubuntu 10.10, udev 162-2.2

  On the Samsung QX410 notebook, the Fn+function and cursor hotkeys
  don't all work correctly.

  What works: volume (fn+left/right), num lock (fn+F11), scroll lock (fn+F12), mute (fn+f6)
  What doesn't work: brightness (fn+up/down), battery status (fn+f2), euro (fn+f3), switch display (fn+f4), disable backlight (fn+f5), problem solver (fn+f7), quiet mode (fn+f8), disable wireless (fn+f9), disable touchpad (fn+f10).

  Expected behavior: The specified action for each key should be
  performed upon pressing; or, at least, a key event should be
  registered.

  Actual behavior: Upon pressing the keys that don't work, the keyboard
  starts behaving strangely, sending incorrect keypresses, sometimes
  gets stuck, and in particular the brightness controls send the
  brightness either all the way up or down.

  Steps to reproduce: 1) Install Ubuntu 10.10. 2) Upon logging in, press
  any of the misbehaving keys.

  How to fix: Add the product name to /lib/udev/rules.d/95-keyboard-
  force-release.rules, it already contains a rule to enable handling the
  misbehaving keys, which appear to be common to several Samsung
  computers, but it has no knowledge of the QX410 and related models
  such as the QX310 and QX510.

  With this fix applied:
  1- The brightness up/down, disable keypad, battery status and mute keys work as expected with no further configuration needed.
  2- The remaining keys (euro, switch display, disable backlight, problem solver, quiet mode, disable wireless) at least generate key events that can be assigned to specific actions in keyboard shortcuts, they no longer make the keyboard get stuck. 

  Contents of /sys/class/dmi/id/product_name:
  QX310/QX410/QX510/SF310/SF410/SF510

  Contents of /sys/class/dmi/id/sys_vendor:
  SAMSUNG ELECTRONICS CO., LTD.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: udev 162-2.2
  ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
  Uname: Linux 2.6.35-24-generic x86_64
  NonfreeKernelModules: wl
  Architecture: amd64
  Date: Sun Dec 26 18:10:18 2010
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. QX310/QX410/QX510/SF310/SF410/SF510
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-24-generic root=UUID=c89d033b-b088-428d-886e-651bd4bf43f5 ro quiet splash
  ProcEnviron:
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  SourcePackage: udev
  dmi.bios.date: 09/14/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 02MX.M003.20100914.SCY
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: QX310/QX410/QX510/SF310/SF410/SF510
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: 02MX
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr02MX.M003.20100914.SCY:bd09/14/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnQX310/QX410/QX510/SF310/SF410/SF510:pvr02MX:rvnSAMSUNGELECTRONICSCO.,LTD.:rnQX310/QX410/QX510/SF310/SF410/SF510:rvr02MX:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
  dmi.product.name: QX310/QX410/QX510/SF310/SF410/SF510
  dmi.product.version: 02MX
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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