[Bug 1247584] Re: [keymap] Since upgrade to Ubuntu 13.10, udev doesn't map middle mouse button.

[Martin Pitt]

Your UdevDb.txt shows that you did the hwdb mangling successfully, i. e.
your input/event12 has "E: KEYBOARD_KEY_700E3=middle". However, "middle"
will definitively not work, as udev only knows about "KEY_*" constants,
not "BTN_* constants" (admittedly this is the first time I head that
someone remaps buttons).

I assume in Ubuntu 13.04 and earlier you had an udev rule which assigned
the key code (274) directly, not the key name? Please confirm this.

So I suppose what broke is that you are not able to directly specify a
key code any more, only a name?

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Title:
  [keymap] Since upgrade to Ubuntu 13.10, udev doesn't map middle mouse
  button.

Status in “systemd” package in Ubuntu:
  New

Bug description:
  On Ubuntu 13.04 I had the middle mouse button of my Logitech T400
  mapped correctly, but after upgrading to 13.10 the /lib/udev/kemap
  utility has disappeared and now I can no longer assign the middle
  button to the middle button function. This mouse has assigned by
  default the middle button to the left_meta keyboard key (super key).
  That's very annoying because I can't do middle clicking with this
  mouse. This mouse has two middle buttons, in the trackpad that serves
  as middle wheel, but the button that currently serves as middle click
  it's in a very uncomfortable position, and the button with the
  left_meta functionality is the one I'd like to use as middle button.

  I tried modifying the file at /lib/udev/hwdb.d/60-keyboard.hwdb with
  this rule:

  keyboard:usb:v046DpC52B*
   KEYBOARD_KEY_700E3=middle

  and also with

  keyboard:usb:v046DpC52B*
   KEYBOARD_KEY_700E3=274

  evtest returns the following results and codes:

  BUTTON I WANT TO ASSIGN:
  Event: time 1383485540.705610, type 4 (EV_MSC), code 4 (MSC_SCAN), value 700e3
  Event: time 1383485540.705610, type 1 (EV_KEY), code 125 (KEY_LEFTMETA), value 1
  Event: time 1383485540.705610, -------------- SYN_REPORT ------------
  Event: time 1383485540.809618, type 4 (EV_MSC), code 4 (MSC_SCAN), value 700e3
  Event: time 1383485540.809618, type 1 (EV_KEY), code 125 (KEY_LEFTMETA), value 0
  Event: time 1383485540.809618, -------------- SYN_REPORT ------------

  THE BUTTON IN UNCOMFORTABLE POSITION
  Event: time 1383485765.956075, type 4 (EV_MSC), code 4 (MSC_SCAN), value 90003
  Event: time 1383485765.956075, type 1 (EV_KEY), code 274 (BTN_MIDDLE), value 1
  Event: time 1383485765.956075, -------------- SYN_REPORT ------------
  Event: time 1383485766.173978, type 4 (EV_MSC), code 4 (MSC_SCAN), value 90003
  Event: time 1383485766.173978, type 1 (EV_KEY), code 274 (BTN_MIDDLE), value 0
  Event: time 1383485766.173978, -------------- SYN_REPORT ------------

  So, I would like to assign the BTN_MIDDLE function to the 700e3
  scancode, but it does not work. With the previous utility included in
  Ubuntu I could do this, but now with this SystemD way I can't do the
  assignment.

  I have not rebooted, but I did rebuild the hwdb database with the
  "udevadm hwdb --update", and replugged the mouse.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: udev 204-0ubuntu19 [modified: lib/udev/hwdb.d/60-keyboard.hwdb]
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  CustomUdevRuleFiles: 60-android-devices.rules
  Date: Sun Nov  3 14:23:16 2013
  InstallationDate: Installed on 2011-12-24 (680 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
  MachineType: ASUSTeK Computer Inc. N53SN
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=/dev/mapper/ubunturoot-raiz ro quiet splash audit=1
  SourcePackage: systemd
  UpgradeStatus: Upgraded to saucy on 2013-10-28 (5 days ago)
  dmi.bios.date: 01/10/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N53SN.209
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N53SN
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN53SN.209:bd01/10/2012:svnASUSTeKComputerInc.:pnN53SN:pvr1.0:rvnASUSTeKComputerInc.:rnN53SN:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: N53SN
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.

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