From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Helge Hafting <helgehaf@aitel.hist.no>
Subject: Re: multiple independent keyboard kernel support
Date: Mon, 12 Sep 2005 10:03:11 -0600
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Cc: Martin Mares <mj@ucw.cz>, Vojtech Pavlik <vojtech@suse.cz>,
       Zoltan Szecsei <zoltans@geograph.co.za>, linux-kernel@vger.kernel.org
References: <4316E5D9.8050107@geograph.co.za> <20050901144812.GA3483@atrey.karlin.mff.cuni.cz> <20050911223619.GB19403@aitel.hist.no>
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On Sunday 11 September 2005 4:36 pm, Helge Hafting wrote:
> On Thu, Sep 01, 2005 at 04:48:12PM +0200, Martin Mares wrote:
> > Hello!
> > 
> > > Btw, Aivils Stoss created a nice way to make several X instances have
> > > separate keyboards - see the linux-console archives for the faketty
> > > driver.
> > 
> > I haven't looked recently, but when I tried that several years ago,
> > the biggest problem was to make two simultaneously running X servers
> > not switch off each other's video card I/O ports off :)
> > 
> Look again.  X config files now have "IsolateDevice" and "BusID"
> to deal with this.  At least iff you get your X from ubuntu or
> debian testing . . .

Yes, but I think IsolateDevice still isn't quite enough if you
have VGA devices behind PCI-PCI bridges.  In other words, devices
behind bridges still get disabled, even with IsolateDevice.

And the ideal situation would be if IsolateDevice could be the
*default*, but the X bugzilla[1] says some devices have problems
with that.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=2216
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