From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Ga=EBl_Deest?= Subject: Extending vesafb for modes switching ? Date: Sun, 01 Feb 2004 18:54:27 +0000 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <401D4B63.1080203@free.fr> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1AnLmd-0000pq-5k for linux-fbdev-devel@lists.sourceforge.net; Sun, 01 Feb 2004 09:53:23 -0800 Received: from postfix3-1.free.fr ([213.228.0.44] ident=postfix) by sc8-sf-mx2.sourceforge.net with esmtp (Exim 4.30) id 1AnLmc-0000xV-Od for linux-fbdev-devel@lists.sourceforge.net; Sun, 01 Feb 2004 09:53:22 -0800 Received: from free.fr (lns-th2-4f-81-56-245-43.adsl.proxad.net [81.56.245.43]) by postfix3-1.free.fr (Postfix) with ESMTP id BCCD1C4124 for ; Sun, 1 Feb 2004 18:53:20 +0100 (CET) Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="iso-8859-1"; format="flowed" To: linux-fbdev-devel@lists.sourceforge.net Ok, this may be a silly question. I am not a kernel/fbdev hacker, so I=20 may ignore some relevant issues. But after many researches, I can't see=20 why it would be impossible for the vesafb driver to handle modes switchin= g. According to my understanding of this stuff, vesafb mode setting is=20 possible only during real mode, via a boot argument, set by bios=20 interrupts, which prevent from changing it later (if I said something=20 wrong, please correct me.) But what about the xfree86 driver ? It seems=20 to do its job via the VBE bios of the card. What would prevent vesafb=20 from doing the same ? I know vesafb only supports VBE 2.0, not 3.0. I=20 couldn't find the VBE 2.0 documentation, but in VBE 3.0 one, protected=20 mode is supported. I would see this as a great improvement, because of the really little=20 number of cards actually supported by vesafb. Regards, Ga=EBl D. ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn