Date: Thu, 9 Sep 2004 17:31:42 +0100 From: Lewis Thompson <lewiz@fajita.org> To: Ted Mittelstaedt <tedm@toybox.placo.com> Cc: FreeBSD-questions <questions@freebsd.org> Subject: Re: VESA_800x600 (age old question) Message-ID: <20040909163142.GA67817@fajita.org> In-Reply-To: <LOBBIFDAGNMAMLGJJCKNCEEHEPAA.tedm@toybox.placo.com> References: <20040908211320.GA47384@fajita.org> <LOBBIFDAGNMAMLGJJCKNCEEHEPAA.tedm@toybox.placo.com>
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--d6Gm4EdcadzBjdND Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Sep 09, 2004 at 07:53:59AM -0700, Ted Mittelstaedt wrote: > > -----Original Message----- > > From: owner-freebsd-questions@freebsd.org > > [mailto:owner-freebsd-questions@freebsd.org]On Behalf Of Lewis Thompson > > Sent: Wednesday, September 08, 2004 2:13 PM > > To: FreeBSD-questions > > Subject: Re: VESA_800x600 (age old question) > > > > > > On Wed, Sep 08, 2004 at 04:59:23PM -0400, Parv wrote: > > > in message <20040908183714.GA43489@fajita.org>, wrote Lewis Thompson > > > thusly... > > > > vidcontrol: cannot set videomode: Operation not supported by device > > > > > > > > Can somebody please tell me what this means? > > > > > > All that means is the card does not have proper/complete VESA > > > implementation. IOW, get a card w/ proper/complete VESA > > > implementation? > > > > Aha! So while it does have a VESA BIOS it's just not complete. > > Presumably the vesa code uses some of the less common features to > > achieve what it does? In a word, it's doesn't work and it's not going > > to without some really radical changes to the vesa code? Can you > > confirm/refute this? > > >=20 > VESA was a standard that was important back in the DOS days. When it > first came out the card vendors all came out with TSR's that would > intercept the VESA calls and either make the equivalent BIOS calls into > the card BIOS or would setup the registers directly. >=20 > Later on the card vendors all integrated that into their video card > BIOS roms. >=20 > These days in the age of Windows and protected mode OSs, the video card > driver generally does not make calls into video BIOS for most things. >=20 > With FreeBSD the VESA stuff is handled by the VESA driver (kldload vesa) > which talks to vga() which I believe handles the ugliness of the bios > calls into the actual video card bios. Only certain cards have been > tested with this module and this driver. (you did load the vesa module > before running vidcontrol and specing VESA modes, did you?) Yeah, I had it compiled into my kernel ;) > It's quite possible that your video card does have vesa extensions but > because of some difference in their implementation, the calls from > vga() fail, thus the vesa module cannot use it. Or it's quite possible > that your manufacturer didn't include VESA support at all. >=20 > There are some DOS utilities floating around which test for VESA > compatability, you might try booting your laptop into DOS and running > one of those. If they say your laptop supports VESA extensions then > perhaps the vga developer would add support into the driver. Okay, I'll see if I can give that a go... I'll have to figure out how to netboot DOS now... :/ Thanks a lot, -lewiz. --=20 I was so much older then, I'm younger than that now. --Bob Dylan, 1964. ------------------------------------------------------------------------ -| msn:purple@lewiz.net | jabber:lewiz@jabber.org | url:www.lewiz.org |- --d6Gm4EdcadzBjdND Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBQIVuItq0KFQv7T8RAv/hAKCeMxqFWJlKmSKPQzBskJsfkzK+yACeKXoj siuphoxq3q74b2rWl6YAOuY= =IGD4 -----END PGP SIGNATURE----- --d6Gm4EdcadzBjdND--
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