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  1. Bug #1258837
  2. Comment #4

Comment 4 for bug 1258837

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Allan Crooks (amcone) wrote : Re: Dell Latitude E7440 ALPS touchpad keeps having state reset

Tested with the newer kernel - running "uname -a" gives me:
Linux wyvern 3.13.0-031300rc3-generic #201312061335 SMP Fri Dec 6 18:37:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

And in the logs:
Dec 10 01:01:59 wyvern kernel: [ 814.172751] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 1
Dec 10 01:01:59 wyvern kernel: [ 814.173731] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 1
Dec 10 01:01:59 wyvern kernel: [ 814.174728] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 1
Dec 10 01:01:59 wyvern kernel: [ 814.177790] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 - driver resynced.
Dec 10 01:14:28 wyvern kernel: [ 1562.691448] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 6
Dec 10 01:14:28 wyvern kernel: [ 1562.702058] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 - driver resynced.

I didn't get much of the "jumping around" behaviour - in fact, I didn't realise that anything was wrong in that sense until I looked in the logs. Also, a later message talked about losing sync "at byte 6" (rather than "at byte 1", which is the usual message).

It's difficult to recreate the bug on demand, so I normally just have to use the system normally for a while until something happens.