linux-kernel - Re: [PATCH] Software Suspend: Fix suspend when console is in VT_AUTO/KD

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Message-ID: <20070309211125.GB6374@ucw.cz>
Date:	Fri, 9 Mar 2007 21:11:26 +0000
From:	Pavel Machek <pavel@....cz>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Andrew Johnson <ajohnson@...rinsyc.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Software Suspend: Fix suspend when console is in VT_AUTO/KD_GRAPHICS mode

Hi!

> > So... if current console is graphical, we leave X accessing the
> > console... That's bad, because video state is not going to be
> > restored...?
> 
> A graphical console is not necessarily X. Is there any requirement for 
> there to be a single VT that isn't in text mode? The vt switching is 
> a hack, we shouldn't make life difficult for people who have their own 
> userspace code that's entirely capable of restoring video state on its 
> own.

How does their wonderful userspace code know that it needs to restore
video?

vt switch *does* mean 'kernel now takes over console'.

							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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