From: Gerd Knorr <kraxel@bytesex.org>
To: linux-fbdev-devel@lists.sourceforge.net,
Linux Kernel Development <linux-kernel@vger.kernel.org>,
penguinppc-team@lists.penguinppc.org
Subject: Re: [Linux-fbdev-devel] Generic VESA framebuffer driver and Video card BOOT?
Date: Mon, 18 Oct 2004 10:36:32 +0200 [thread overview]
Message-ID: <20041018083632.GE3065@bytesex> (raw)
In-Reply-To: <20041017120728.GC10532@admingilde.org>
On Sun, Oct 17, 2004 at 02:07:28PM +0200, Martin Waitz wrote:
> hi :)
>
> On Fri, Oct 15, 2004 at 03:13:13PM +0200, Gerd Knorr wrote:
> > You have a application running which uses the framebuffer device, then
> > suspend with that app running. You'll have to restore the state of
> > the device _before_ restarting all the userspace proccesses, otherwise
> > the app will not be very happy.
>
> As long as the app only interfaces with the framebuffer device and not
> directly with the hardware it won't notice.
Well, mmap("/dev/fb") will just map the gfx cards memory into
the applications address space, so they _will_ interface with
the hardware.
> The apps data will simply not show up on the screen until the
> usermode helper finishes.
Whenever writing to the gfx memory before finishing the initialization
is harmless or not probably depends on the hardware, I'd better not
count on it ...
Gerd
--
return -ENOSIG;
next prev parent reply other threads:[~2004-10-18 9:01 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-14 19:02 Generic VESA framebuffer driver and Video card BOOT? Kendall Bennett
2004-10-15 0:27 ` [Linux-fbdev-devel] " Antonino A. Daplas
2004-10-15 18:36 ` Kendall Bennett
2004-10-15 21:51 ` Antonino A. Daplas
2004-10-15 23:20 ` Jon Smirl
2004-10-15 23:51 ` Kendall Bennett
2004-10-15 23:58 ` Jon Smirl
2004-10-19 21:15 ` Pavel Machek
2004-10-16 1:50 ` Antonino A. Daplas
2004-10-16 2:03 ` Jon Smirl
2004-10-18 19:34 ` Kendall Bennett
2004-10-18 20:34 ` Richard Smith
2004-10-18 20:47 ` Kendall Bennett
2004-10-18 21:04 ` Richard Smith
2004-10-18 21:16 ` Jon Smirl
2004-10-18 22:34 ` Richard Smith
2004-10-18 23:28 ` Jon Smirl
2004-10-19 0:18 ` Richard Smith
2004-10-19 0:55 ` Kendall Bennett
2004-10-19 1:39 ` Richard Smith
2004-10-19 17:54 ` Kendall Bennett
2004-10-19 21:48 ` Pavel Machek
2004-10-20 17:01 ` Kendall Bennett
2004-10-20 19:08 ` Pavel Machek
2004-10-21 19:36 ` Kendall Bennett
2004-10-19 21:42 ` Pavel Machek
2004-10-15 12:05 ` Gerd Knorr
2004-10-15 12:38 ` Geert Uytterhoeven
2004-10-15 12:45 ` Alan Cox
2004-10-19 21:54 ` Pavel Machek
2004-10-15 13:13 ` Gerd Knorr
2004-10-17 12:07 ` Martin Waitz
2004-10-18 8:36 ` Gerd Knorr [this message]
2004-10-18 11:39 ` Martin Waitz
2004-10-18 12:10 ` Gerd Knorr
2004-10-18 20:21 ` Helge Hafting
2004-10-18 20:42 ` Oliver Neukum
2004-10-19 16:57 ` Martin Waitz
2004-10-15 18:29 ` Venkatesh Pallipadi
2004-10-16 9:01 ` Nigel Cunningham
2004-10-15 18:36 ` Kendall Bennett
2004-10-15 13:48 ` Helge Hafting
2004-10-15 18:36 ` Kendall Bennett
2004-10-15 21:44 ` Helge Hafting
2004-10-15 22:12 ` Kendall Bennett
2004-10-16 0:41 ` [Linux-fbdev-devel] " Antonino A. Daplas
2004-10-26 11:14 ` Paulo Marques
2004-10-27 1:58 ` Kendall Bennett
2004-10-27 11:11 ` Paulo Marques
2004-10-27 19:52 ` Kendall Bennett
2004-10-15 21:51 ` Antonino A. Daplas
2004-10-16 17:44 ` Jon Smirl
2004-10-18 19:34 ` [Linux-fbdev-devel] " Kendall Bennett
2004-10-19 21:00 ` Pavel Machek
2004-10-19 21:11 ` Pavel Machek
2004-10-20 17:01 ` [Linux-fbdev-devel] " Kendall Bennett
2004-10-20 17:31 ` Pavel Machek
2004-10-20 18:44 ` Kendall Bennett
2004-10-20 19:10 ` Pavel Machek
2004-10-21 19:36 ` Kendall Bennett
2004-10-21 20:47 ` Richard Smith
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