Ok then, let's do this again:

1. >"Could you please provide the information following
https://wiki.ubuntu.com/DebuggingTouchpadDetection#In_case_your_Touchpad_stops_working_after_a_while
?"

According to this instructions of the wiki I should try to reproduce
this issue by pressing keys and look at evtest events, but only if my
external mouse is NOT working when connected.

But my external mouse is working when the touchpad is not. So no bug
filing against HAL and no looking at evtest events.

2. >"As well, could you please confirm this issue exists with the latest
development release of Ubuntu? ISO CD images are available from
http://cdimage.ubuntu.com/daily/current/ . If the issue remains, could
you please run the following command in the development release from a
Terminal (Applications->Accessories->Terminal), as it will automatically
gather and attach updated debug information to this report:"

It is in the latest development release (Quantal), see tags. Now the
dev. release is 13.04.

3. >"Also, could you please test the latest upstream kernel available
following https://wiki.ubuntu.com/KernelMainlineBuilds ?"

Tested against Mainline 3.6 rc5. Had still this issue. So which
information are exactly missing?

As part of the coorperation of Canonical with Lenovo as OEM, where the
Thinkpad L520 was/is shipped with Ubuntu preinstalled, one could think,
that there is a higher chance to get this fixed, than other issues, but
it's not the case. But why should customers of preinstalled Ubuntu as
part of an OEM deal care if there hardware (especially the touchpad) is
working properly ?

> "If you are using a Ubuntu kernel, not a mainline kernel, it's not
considered an upstream issue"

As I have written, it's not in an Ubuntu related issue, also that's not
the problem. I can use your Mainline Kernel debs or I will compile the
Mainline Kernel by myself.

> "It's not that I do not want to help, and simply expect to have this
fixed or something, but I'm no kernel dev. I need instructions to go
deeper then truss, a tail of syslog, etc."

Word

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-input-synaptics in Ubuntu.
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 “xserver-xorg-input-synaptics” package in Ubuntu:
  Incomplete

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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