2007/2/22, Magnus Vigerlöf <[EMAIL PROTECTED]>:
> On Thursday 22 February 2007 09:42, Pablo Giménez wrote:
> [...]
> > Following with the discussion of this last release.
> > I haven't tried it, because the machines where I am using wacom are in
> > production and now I can't touch anything from them.
> > But I am very interested about to know if the problem with several X
> > session is solved.
> > I explain it again, suppose that there are two users, A and B.
> > A enter into his/her session and then decide to change the user to B
> > so it change the user but mantiun his previous version, you can do it
> > gdm, kdm, etc ...
> > Being in the session of the B user he decides to return temporaly to
> > his previous session, but mainteiun the current session, for user B,
> > opened. When he return to his old A session then wacom devices don't
> > respond.
> > You can't have two X session opened at the same time with different
> > users and have change between them using your wacom devices.
> > I have tested in windows XP and the same problems occur.
> > Some light about this?
> > I hope to explain the problem correctly, thanks.
>
> I think I understand and I can only confirm that this is a problem in the
> driver for some reason. I tried to find the exact reason for this 4-5 months
> ago but came up empty that time. I have however only seen one or two
> questions about this, so it's obviously not a problem many has.
>
> I am looking into support for true hotplug of wacom tablets for the next
> release from Xorg (7.3), and there are a few things that needs to be changed
> in our driver if that should work as we want. *Maybe* those changes can help
> in this case. When I look at the code I doubt it, but there's always a
> possibility..
Maybe is a problem in the X side.
I can guess that the problem is related to open/close the wacom device.
Maybe when you first enter your session the new  Xsession opens the
wacom device, take the ownership of it. When you change the new
session do the same, here is my doubh, why? it can happen. If the
second user can access to a previously opened wacom device and take th
eownership, the it will be logicla that when you return to your
previous session you can again open the wacom device.
I am not a  kernel or device driver expert so maybe I am complitely in
a mistake.
>
> Meanwhile, if you really want to be able to do what you describe I can only
> point you to my wacomproxy kernel module (http://wacomproxy.sf.net) which has
> slightly different ideas what 'grabbing' really means and this makes a
> significant difference in your case. You will also be able to unplug/replug
> your tablet without switching VT to make it work properly as a bonus. There
> is a user-space implementation of this somewhere on the linuxwacom web (I
> just can't find it at the moment..).
Thanks for it. I will try to get time to try your module.
>
> Cheers
>  Magnus
>


-- 

Un saludo
Best Regards
Pablo Giménez

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