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[Bug 896922] Re: Lenovo L520 - "psmouse.c: touchpad at isa0060/serio4/input0 lost sync" and stops working for seconds

 

All,
I'm facing the same problem since yesterday. The trackpoint (I don't use touchpad) just freezes on my Thinkpad T420 running 12.04 and 3.2.0-57-generic-pae kernel.
After reading the entire thread, I also tried Gero's suggestion but it didn't work for me.
For the first time (when trackpoint froze yesterday) i got the similar errors in dmesg and syslog like:
Dec 17 13:51:55 vipin-thinkpad-t420 kernel: [13612.139398] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
But today, the trackpoint froze for 3-4 times and such errors are not seen in logs.
I also noticed that this happens when I'm typing and want to use trackpoint immediately after that.
Strangely, I'm using this laptop (with same OS) since last 1+ year, this problem started to happen since yesterday only. And now it is happening everytime in only 5-10 mins after reboot.
Just wanted to give an update on my problem, so anyone working on this problem currently?

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https://bugs.launchpad.net/bugs/896922

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

Status in The Linux Kernel:
  New
Status in xf86-input-synaptics:
  New
Status in “linux” package in Ubuntu:
  Incomplete
Status in “xserver-xorg-input-synaptics” package in Ubuntu:
  Confirmed

Bug description:
  Since Maverick, 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

  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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