From owner-freebsd-hackers Wed Jan 27 06:46:23 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id GAA22390 for freebsd-hackers-outgoing; Wed, 27 Jan 1999 06:46:23 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from dingo.cdrom.com (castles361.castles.com [208.214.167.61]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id GAA22371 for ; Wed, 27 Jan 1999 06:46:19 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (LOCALHOST [127.0.0.1]) by dingo.cdrom.com (8.9.1/8.8.8) with ESMTP id GAA24042; Wed, 27 Jan 1999 06:40:02 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Message-Id: <199901271440.GAA24042@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: SXren Schmidt cc: mike@smith.net.au (Mike Smith), dillon@apollo.backplane.com, hackers@FreeBSD.ORG Subject: Re: Any way to get machine out of hires when it breaks into DDB> ? In-reply-to: Your message of "Wed, 27 Jan 1999 08:46:17 +0100." <199901270746.IAA33993@freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Date: Wed, 27 Jan 1999 06:40:01 -0800 From: Mike Smith Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hub.freebsd.org id GAA22374 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > It seems Mike Smith wrote: > > > > > > It sure wouuld be nice if DDB could restore the video back to VGA. > > > Anybody have any ideas? > > > > Please search the archives for discussions of this. The short answer > > is "it can't be done". > > Erhm, well, it CAN be done, but not easily. > > I have started on a X server that uses libvgl as the underlying graphics > "glue". Since libvgl can (well my local version) use the BIOS to switch > to hires VESA modes, the kernel "knows" how to get out of graphics mode > when something bad happens. > However you can be screwed so bad that even this doesn't work. > The other downside is that such an Xserver redefines slow... This is what QNX do with their Photon micro-GUI; they use the VESA BIOS and then the linear framebuffer mode that most cards have. It's not what you'd call "accelerated", but for a lot of things it's more than adequate. If you're going to do it that way, it does indeed become possible, yes. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message