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From: Pavel Machek <pavel@ucw.cz>
To: Andrew Johnson <ajohnson@intrinsyc.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Software Suspend: Fix suspend when console is in VT_AUTO/KD_GRAPHICS mode
Date: Fri, 9 Mar 2007 21:13:31 +0000	[thread overview]
Message-ID: <20070309211330.GC6374@ucw.cz> (raw)
In-Reply-To: <DBC923D919FAB345973A94E6E194E849043808E0@yvrmail01.itc.intrinsyc.com>

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.
> 
> The problem actually comes about when using Qtopia Phone Edition (QPE)
> on a PXA270. QPE puts the console into VT_AUTO+KD_GRAPHICS mode and
> writes directly to the framebuffer from then on.  In this mode the
> kernel correctly disallows a console change, as QPE is not getting
> notification of a console change and thus does not know when to repaint
> the screen. 

Fix qpe to use vt_process, instead?

...how does qpe know when to repaint the screen, anyway?

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

  reply	other threads:[~2007-03-09 21:14 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-08 22:54 [PATCH] Software Suspend: Fix suspend when console is in VT_AUTO/KD_GRAPHICS mode Andrew Johnson
2007-03-08 23:37 ` Daniel Drake
2007-03-09  5:01   ` Andrew Johnson
2007-03-09  9:08 ` Pavel Machek
2007-03-09 15:34   ` Matthew Garrett
2007-03-09 16:10     ` Andrew Johnson
2007-03-09 21:13       ` Pavel Machek [this message]
2007-03-09 21:58         ` Andrew Johnson
2007-03-10 22:26           ` Pavel Machek
2007-03-09 19:02     ` Andrew Johnson
2007-03-09 21:19       ` Pavel Machek
2007-03-10  0:05         ` Andrew Johnson
2007-03-10 22:28           ` Pavel Machek
2007-03-09 21:11     ` Pavel Machek

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