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[Mathias Dietrich <896922@xxxxxxxxxxxxxxxxxx>]

Tested Kernel 3.10.2, issue still exists:

[  153.617780] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 1
[  153.622898] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 1
[  153.627499] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 1
[  153.628887] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 1
[  153.634310] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 1
[  153.634323] psmouse serio4: issuing reconnect request

** Tags removed: needs-upstream-testing
** Tags added: kernel-bug-exists-upstream

** Tags removed: kernel-bug-exists-upstream
** Tags added: kernel-bug-exists-upstream-3.10.2

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Title:
  Lenovo L520 - "psmouse.c: touchpad at isa0060/serio4/input0 lost sync"
  and stops working for seconds

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Confirmed
Status in “xserver-xorg-input-synaptics” package in Ubuntu:
  Confirmed
Status in “xserver-xorg-input-synaptics” package in Fedora:
  Unknown

Bug description:
  There are a lot of open bug-reports concerning this defect, but due to
  the most popular report was closed by developers, with the demand to
  open a new report if this persists, I open a new bug-report.

  When using the touchpad, it's often not working and stucks for seconds, in short, it is unusesable.
  This bug still happens in Ubuntu 11.10 on a Lenovo L520 with 3.0.0-13-generic. Its a Synaptics touchpad, maybe it's kernel bug.

  Dmesg produces the following output:

  [14861.416567] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [14861.417899] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [14861.419232] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [14861.420563] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [14861.424233] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [14861.424240] psmouse.c: issuing reconnect request
  [17240.238861] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 4
  [17240.240191] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [17240.258248] psmouse.c: TouchPad at isa0060/serio4/input0 - driver resynched.
  [17695.950963] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [17695.955414] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [17695.956743] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [17695.960402] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [17695.961736] psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1
  [17695.961740] psmouse.c: issuing reconnect request

  Whoever is willing to fix this bug can earn a lot of Karma for closing
  all the duplicates, so please fix this, it's happening since Maverick.

  Of course I'll will help you getting this fixed with any information
  you need.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-13-generic 3.0.0-13.22
  ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
  Uname: Linux 3.0.0-13-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mathias   15841 F.... pulseaudio
  CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf0900000 irq 43'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0269,17aa21de,00100100 HDA:80862805,80860101,00100000'
     Controls      : 24
     Simple ctrls  : 11
  Card29.Amixer.info:
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 8GHT26WW-1.080000'
     Mixer name	: 'ThinkPad EC 8GHT26WW-1.080000'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
  Card29.Amixer.values:
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Sun Nov 27 17:58:09 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: LENOVO 785954G
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-13-generic root=UUID=cf5078bd-6bdb-4d1b-a1bb-92d20c5ac60d ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-13-generic N/A
   linux-backports-modules-3.0.0-13-generic  N/A
   linux-firmware                            1.60
  SourcePackage: linux
  StagingDrivers: rts_pstor mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/06/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8GET37WW (1.14 )
  dmi.board.name: 785954G
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8GET37WW(1.14):bd10/06/2011:svnLENOVO:pn785954G:pvrThinkPadL520:rvnLENOVO:rn785954G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 785954G
  dmi.product.version: ThinkPad L520
  dmi.sys.vendor: LENOVO

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