touch-packages team mailing list archive

[Carl Ponder <CPonder@xxxxxxxxxx>]

I have a Dell Latitude E6500.
I'd seen this problem with my 3-button IBM USB mouse, but it went away when I upgraded from Ubuntu 10.04 to 12.04.
I have another external IBM USB mouse, this one with a wheel, and am still seeing the problem.
So far I can temporarily stop the problem by un-plugging & re-plugging the mouse; I can also temporarily stop the problem with the command

xinput set-prop 13 "Device Enabled" 0

One thing to note is that the temporary fix works even if the device number DOES NOT match the AlpsPS/2 ALPS DualPoint TouchPad. I don't believe the issue is a conflict between the two devices for this reason.
I think that the mouse-driver is getting into some crudded-up state that gets reset when I unplug/replug the device or if I run the above "xinput" command.
My best guess is that Ubuntu has real drivers for some mice and uses a buggy default-driver for anything else, and 12.04 included a driver for my first mouse but not my second mouse. Can anyone at Ubuntu confirm this? Or give us a better explanation?

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Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1363070

Title:
  USB Mouse cursor jumps and buttons get deactivated with two PS/2
  devices connected

Status in “xorg” package in Ubuntu:
  New

Bug description:
  This happens when two PS/2 devices are connected at the same time and a USB mouse is primarily used (eg using a Laptop with a PS/2 touchpad with an external USB mouse)
  Symptoms: after a while (can be 10 minutes or 1 hour) the mouse cursor starts randomly to jump (mostly down) and up and then the mouse buttons get deactivated (clicking does not have any effect). In that case, moving the mouse marks the underlying text (thus imitating a continuous left-click). This malbehaviour can be temporarily stopped when shortly using one PS/2 device. After a while the same symptoms reappear.

  Setup:
  Dell D430 docked to a Dell D/dock PD01x. The second PS/2 device is an (switched off) Logitech TrackMan Live! (infrared mouse connected via a PS/2 receiver). 
  This bug appears under 12.04 LTS Unity and 14.04 with Xfce, KDE or Unity (always using the latest kernels). Using KDE the bug appears more often than when using XFCE.

  To resolve the issue:
  disconnect the external Trackman Live PS/2 device from the docking station.

  This bug drove me crazy. Only by accident I disconnected the Trackman
  and since then my USB mouse works well again. I verified that the bug
  reappears as soon as I connect the TrackMan again and I used different
  USB mice (as I thought that it might be a USB problem). It did not
  happen under Windows, so it is not hardware related.

  If this bug is going to be followed up I can test with a normal PS/2
  mouse (instead of the TrackMan Live) if the same bug happens or would
  be happy to provide logging data.

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