From: Phillip Susi <psusi@cfl.rr.com>
To: Greg KH <gregkh@suse.de>
Cc: linux-kernel@vger.kernel.org
Subject: Multiple consoles
Date: Mon, 09 Jan 2012 16:11:36 -0500 [thread overview]
Message-ID: <4F0B5808.2010900@cfl.rr.com> (raw)
I was considering some questions I read about setting up a multi-seat
system where you have two separate sets of displays, keyboards, mice,
and X servers. The problem someone noticed is that if you run the
second X server on tty8, then you have to switch the console to tty8 to
activate it, which disables the primary X server.
It occurred to me that there ought to be an entirely separate set of
virtual consoles bound to the second seat, and the second X server ought
to run on one of those vcs. Or of course, you could choose to log into
the console and not bother with X.
Looking at drivers/tty/vt/vt.c, it appears that it was written assuming
that there is just one linux console. It appears to use global
variables for keeping track of which vc is active, etc, rather than
creating one or more console devices, and store the vc multiplexing
information in those devices. So to fix this, vt.c and keyboard.c would
need significantly refactored to remove the global variables and create
a console device to bind vcs, keyboards, and displays to, and then you
could create a second one if you wanted.
Does this make sense or am I missing something?
next reply other threads:[~2012-01-09 21:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 21:11 Phillip Susi [this message]
2012-01-09 21:21 ` Multiple consoles Samuel Thibault
2012-01-09 21:32 ` Phillip Susi
2012-01-09 21:56 ` Samuel Thibault
2012-01-09 22:07 ` Geert Uytterhoeven
2012-01-09 22:22 ` Alan Cox
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