** Description changed:

- If I connect my magic touchpad after Unity has launched - in this case,
- by clicking on it to wake it up and re-pair it with the desktop - then
- it works fine as a touchpad but Unity fails to receive multitouch
- (three-finger move, four finger swipe/tap) gestures. Restarting Unity
- gets those gestures back.
+ SRU Justification
+ =================
+ [Impact]
+ Without this fix, new multitouch devices connected to a computer after the 
user has logged in will not be recognized. They will continue to work as normal 
pointing devices, but they will fail to work for gesture handling.
+ 
+ [Test Case]
+ Obtain a detachable multitouch device, such as an Apple Magic Trackpad. Leave 
it disconnected at first. Log in to Unity. Connect the device. Attempt to 
perform a gesture, such as a four touch tap to open the dash. The gesture 
should work.
+ 
+ [Regression Potential]
+ Small. The code change is fairly trivial and should not cause any regression. 
Any regression that may be seen would involve devices not generating gestures 
due to mismatched gesture subscriptions. If gestures continue to work for all 
devices, then there is likely no regression.
+ 
+ Original Bug Report
+ ===================
+ If I connect my magic touchpad after Unity has launched - in this case, by 
clicking on it to wake it up and re-pair it with the desktop - then it works 
fine as a touchpad but Unity fails to receive multitouch (three-finger move, 
four finger swipe/tap) gestures. Restarting Unity gets those gestures back.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: libutouch-geis1 2.2.9-0ubuntu3
  ProcVersionSignature: Ubuntu 3.4.0-3.8-generic 3.4.0
  Uname: Linux 3.4.0-3-generic x86_64
  ApportVersion: 2.1.1-0ubuntu1
  Architecture: amd64
  CurrentDmesg:
-  Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg 
-'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
-  dmesg: write failed: Broken pipe
+  Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg 
-'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
+  dmesg: write failed: Broken pipe
  Date: Wed Jun  6 10:25:50 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 
(20120321)
  LsInput: Error: command ['gksu', '-D', 'Apport', '--', 'env', '-u', 
'LANGUAGE', 'LC_MESSAGES=C', 'lsinput'] failed with exit code 127:
  MachineType: Intel Corporation 2012 Client Platform
  MtDevices: Apple Wireless Trackpad: /dev/input/event12
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.4.0-3-generic 
root=UUID=aec9f3df-6681-49ab-8357-eaa169fccc7f ro rootflags=subvol=@ quiet 
splash vt.handoff=7
  SourcePackage: utouch-geis
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/16/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: ACRVMBY1.86C.0078.P00.1201161002
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Emerald Lake 2
  dmi.board.vendor: Intel Corporation
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 9
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrACRVMBY1.86C.0078.P00.1201161002:bd01/16/2012:svnIntelCorporation:pn2012ClientPlatform:pvrTobefilledbyO.E.M.:rvnIntelCorporation:rnEmeraldLake2:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct9:cvrToBeFilledByO.E.M.:
  dmi.product.name: 2012 Client Platform
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Intel Corporation

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https://bugs.launchpad.net/bugs/1009270

Title:
  Unity fails to use multitouch gestures if magic touchpad is connected
  after Unity has launched

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