Re: Only one user has DRI

Tormod Volden wrote:
> On Nov 8, 2007 12:51 PM, Jerome Glisse <[email protected]> wrote:
>> Peter Gaston wrote:
>>> What do I need to do to enable DRI for all logged in users?
>> My guess would be that the driver does not closing properly on first
>> user exit. Does the Xorg log give any informations ?
> 
> Jerome, Peter means users logged in simultaneously (fast user
> switching). This is usually implemented as each user running his own X
> server. The problem is that only the first X server launched can use
> DRI. The second (running at the same time) will have DRI disabled.
> 
> From some discussions I have seen somewhere, future implementations of
> fast user switching will probably use one master X server, and having
> the different users applications draw on that single server (maybe
> through nested servers).
> 
> (Garry, yes two applications can run at the same time and both use DRI.)
> 
> Tormod

Oh i didn't get that there was multiple xserver then yes this won't work
as i believe we allow only one master on drm. With kernel modesetting we
will make sure that the card can truely be shared weither it be by several
X server or by one Xserver & other fullscreen app using drm (what ever you
want). I don't think we will use one master X server but rather some kind
of daemon which will have be a privileged user of drm and will be the app
responsible for switching btw others users of drm (so things like access
control will be in this daemon and this also allow to do effect a la compiz
on user switching).

Cheers,
Jerome Glisse

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