Re: Assigning sound card to X display

[ludovic p. <pl...@nn...>]

Le Mardi 16 Ao=FBt 2005 13:22, Hugo Vanwoerkom a =E9crit :
> --- ludovic pollet <pl...@nn...> wrote:
> > Le Mardi 16 Ao=FBt 2005 08:05, vous avez =E9crit :
> > > On Otrdiena, 9. Augusts 2005 03:04, ludovic pollet
> >
> > wrote:
> > > > Hello,
> > > >
> > > > I adressed the sound card issue with multiple X
> >
> > display.
> >
> > > > It is a little filesystem for fuse
> >
> > (http://fuse.sourceforge.net/).
> >
> > > > Basically, it provides a symlink which depends
> >
> > on the DISPLAY environment
> >
> > > > variable.
> > > >
> > > > When a process will open /dev/dsp, the symlink
> >
> > will resolve depending on
> >
> > > > the DISPLAY variable of the process. From there,
> >
> > it is easy to make
> >
> > > > process on first display open the first dsp, and
> >
> > so on...
> >
> > > > This should works for any program using OSS
> >
> > (this covers most unfriendly
> >
> > > > ones, like Mozilla plugin, OpenOffice or vmware,
> >
> > ...), or ALSA in
> >
> > > > emulation mode (for native mode, alsalib is our
> >
> > friend :-).
> >
> > > > Source and binary are available at
> >
> > http://www.nnx.com/~pludov/sessiond/
> >
> > > > It should work out of the box for Fedora core 3,
> >
> > (with fuse installed)...
> >
> > > > Any feedback is welcome !
> > >
> > > Hm. How easy is /dev/ttyXX redirect?
> > > After /dev/tty redirect to new/fake driver all X
> >
> > switch-tty patches goes
> >
> > > away. So i have in my mind unpatched linux and X.
> > >
> > > Aivils
> >
> > I don't really understand why tty redirection is
> > interesting !
> > But it should be just the same : Replace the
> > existing /dev/ttyXX
> > to /var/session/currents/current/ttyXX and then,
> > create the per display link
> > in /var/session/:0 or /var/session/:1
> >
> > Then link in /var/session/:X will be used regarding
> > the DISPLAY variable.
>
> What happens to using sound in the vc's? E.g. I hit
> Alt+Ctl+F1 and in vc1/0 issue: play mplayer.wav?
>
> Hugo
>

Ah !

So I was totally wrong about /dev/ttyXX. It is just a matter of setting t=
he=20
right value for DISPLAY env when login in console.

--=20
printk("CPU[%d]: Sending penguins to jail...",smp_processor_id());
        linux-2.4.8/arch/sparc64/kernel/smp.c