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[Bug 1304993] Re: AlpsPS/2 ALPS GlidePoint become less sensitive to single touch


Verified with the latest kernel:
3.14.0-031400-generic #201403310035

This issue still exist

** Tags added: kernel-bug-exists-upstream

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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  AlpsPS/2 ALPS GlidePoint become less sensitive to single touch

Status in “linux” package in Ubuntu:

Bug description:
  The touchpad on this system was detected as a PS/2 mouse on 12.04.3
  Now it's correctly detected as AlpsPS/2 ALPS GlidePoint on Trusty dailylive (3.13.0-23)

  However, it become less sensitive to single touch detection
  I could genetly use my finger tip to control the cursor on 12.04.3, but now I have to incerase the contact area between my finger and the touchpad, which induced more firction.

  Another way to confirm this issue on Trusty with this system is:
  1. Do two-finger scrolling with finger tips (with small contact area of your fingers)
  2. After you can successfully scroll, remove one finger, you will find single touch does not work with a small contact area of your finger.

  ubuntu@201305-13624:~$ xinput list
  ⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
  ⎜   ↳ eGalax Inc. eGalaxTouch EXC7910-1018-03.00.01	id=9	[slave  pointer  (2)]
  ⎜   ↳ ALPS PS/2 Device                        	id=11	[slave  pointer  (2)]
  ⎜   ↳ AlpsPS/2 ALPS GlidePoint                	id=12	[slave  pointer  (2)]
  ⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
      ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
      ↳ Power Button                            	id=6	[slave  keyboard (3)]
      ↳ Power Button                            	id=7	[slave  keyboard (3)]
      ↳ HP Truevision HD                        	id=8	[slave  keyboard (3)]
      ↳ AT Translated Set 2 keyboard            	id=10	[slave  keyboard (3)]
      ↳ HP WMI hotkeys                          	id=13	[slave  keyboard (3)]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-23-generic 3.13.0-23.45 [modified: boot/vmlinuz-3.13.0-23-generic]
  ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
  Uname: Linux 3.13.0-23-generic x86_64
  ApportVersion: 2.14.1-0ubuntu1
  Architecture: amd64
   /dev/snd/controlC0:  ubuntu     1653 F.... pulseaudio
   /dev/snd/controlC1:  ubuntu     1653 F.... pulseaudio
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
  CurrentDesktop: Unity
  Date: Wed Apr  9 18:16:29 2014
  HibernationDevice: RESUME=UUID=7c06a53c-59c3-4f3e-8fc4-8fc56819ec91
  InstallationDate: Installed on 2014-04-07 (1 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140406)
  MachineType: Hewlett-Packard HP Pavilion TS 14 Notebook PC
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic.efi.signed root=UUID=e9552b0e-0694-4ff5-92a8-a7830ab61feb ro quiet splash nomodeset vt.handoff=7
   linux-restricted-modules-3.13.0-23-generic N/A
   linux-backports-modules-3.13.0-23-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/27/2013
  dmi.bios.vendor: Insyde
  dmi.bios.version: B.09
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 2162
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 29.0A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrB.09:bd05/27/2013:svnHewlett-Packard:pnHPPavilionTS14NotebookPC:pvr089C100000000010000630100:rvnHewlett-Packard:rn2162:rvr29.0A:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Pavilion TS 14 Notebook PC
  dmi.product.version: 089C100000000010000630100
  dmi.sys.vendor: Hewlett-Packard

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