I quickly looked at the Xorg.log files from launchpad below.  Right
after hotplug of tablet, usbParse() goes in infinite loop and prints
message about invalid serial #.  Not positive its infinite loop but at
least the log stops with no messages beyond repeating error message.  If
you wait long enough, perhaps the tablet corrects itself?

Intuos1 and Intuos2 are unique in that they get serial # from hardware
itself and used by xf86-input.wacom.  Serial # is a unique value that
allows tracking multiple tools at once.

You've found a case were tablet streams out packets in a way that serial
# is sent as zero.  Either tablet is saying a zero value or else an if()
statement is getting confused and not allowing to init values correctly.

This is all on kernel side, BTW.

Since I do not own own of these tablets, I do not have much more to
offer.  I can only say it appears mostly a kernel side bug from
information so far.

BTW: the best place to discuss wacom bugs is at project page bug tracker
or mailing list:  http://linuxwacom.sourceforge.net

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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xf86-input-wacom in Ubuntu.
https://bugs.launchpad.net/bugs/532137

Title:
  Wacom Intuos2 tablet hotplug only works once after booting

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