Comment 3 for bug 806256

http://sourceforge.net/mailarchive/message.php?msg_id=27604784

"looking at the code, first_valuator is always 3 when sending pad event
(wcmCommon.c:748). If the server resets the pointer, that indicates a bug in
the server. However, it doesn't happen to me on 1.10.2 and I can't find any
patches that would have fixed this bug since 1.10.1. I wonder if that's a
Ubuntu-specific X server bug?

The driver code is correct though."

and also

"As another data point, I cannot confirm the jump under Arch Linux
after having downgraded xorg-server to 1.10.1. It's looking more like
an Ubuntu-specific bug."