Hi,

I'd like to have som input from you about an idea I got a few weeks ago. What 
I'm most interested in is if it has been tried before, serious drawbacks you 
can see, .... But any comment is appreciated. I have not seen anything like 
this beeing tried/developed before but I might be wrong.

My problem was that I could not unplug/plug my Wacom tablet, without getting a 
kernel oops (even though I tried all trix I could find on the linuxwacom-web 
and other sites), or only getting my tablet in a 'glorified-mouse-mode' where 
screen edges never are alligned with the tablet edges and there's no pressure 
sensitive information sent.

The idea is to create a module that provides an aggregated device for tablets, 
very much like /dev/input/mice is for all connected mice. A device that X can 
open even though the tablet is not connected and which automatically detectes 
if I plug in my wacom and in that moment open it so it can forwarde events to 
those who has it open.

Pros/cons I've seen this far:
+ No special handling when I unplug/plug the device for X.
+ No requirement to have the tablet plugged when X starts.
+ Device id (pen/eraser/...) should still work.
? Absolute coordinates must be recalculated to the virtual tablet values (all 
tablets has different max-value for x, y, pressure, etc)
- Probably strange result if several tablets are connected at the same time.

More information can be found in my initial post about this: 
http://sourceforge.net/mailarchive/forum.php?thread_id=10958495&forum_id=19620

I've also made an implementation of the idea that you can test if you are 
interested in it: http://195.38.3.2/linuxprojs/ (updated 2006-06-20)

 /Magnus


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