Public bug reported:

I have (up to date) Ubuntu 16.04 on IBM Thinkpad X61 Tablet. I can use
the stylus to move the cursor – but when I touch the screen with it
(i.e. click), the system immediately freezes.

When I touch it without X, in the text mode (Ctrl+Alt+F1) it does not
freeze.

I tried to debug it over network, but the network also freezes at the
same moment.

When I try QubesOS (with kernel 4.1.13-9.pvops.qubes.x86_64) on the same
machine, the stylus works correctly and the system does not freeze.

Any tips how to debug it? Maybe using the serial port (I have the
docking station with RS232). Or I can try some older releases and find
the last one that was working if it helps.

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1665914

Title:
  Ubuntu 16.04 freezes on Thinkpad X61 Tablet when touched by the stylus

Status in xorg package in Ubuntu:
  New

Bug description:
  I have (up to date) Ubuntu 16.04 on IBM Thinkpad X61 Tablet. I can use
  the stylus to move the cursor – but when I touch the screen with it
  (i.e. click), the system immediately freezes.

  When I touch it without X, in the text mode (Ctrl+Alt+F1) it does not
  freeze.

  I tried to debug it over network, but the network also freezes at the
  same moment.

  When I try QubesOS (with kernel 4.1.13-9.pvops.qubes.x86_64) on the
  same machine, the stylus works correctly and the system does not
  freeze.

  Any tips how to debug it? Maybe using the serial port (I have the
  docking station with RS232). Or I can try some older releases and find
  the last one that was working if it helps.

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