From owner-freebsd-questions@FreeBSD.ORG Fri May 12 21:05:32 2006 Return-Path: X-Original-To: freebsd-questions@FreeBSD.org Delivered-To: freebsd-questions@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4EA4416B01A; Fri, 12 May 2006 21:05:32 +0000 (UTC) (envelope-from eric@anholt.net) Received: from thompson.anholt.net (69-30-77-85.dq1sn.easystreet.com [69.30.77.85]) by mx1.FreeBSD.org (Postfix) with ESMTP id A43BB43D68; Fri, 12 May 2006 21:05:21 +0000 (GMT) (envelope-from eric@anholt.net) Received: from thompson.anholt.net (localhost [127.0.0.1]) by thompson.anholt.net (8.13.6/8.13.6) with ESMTP id k4BNRJxk009182; Thu, 11 May 2006 16:27:19 -0700 (PDT) (envelope-from eric@anholt.net) Received: (from anholt@localhost) by thompson.anholt.net (8.13.6/8.13.6/Submit) id k4BNRGtU009181; Thu, 11 May 2006 16:27:16 -0700 (PDT) (envelope-from eric@anholt.net) X-Authentication-Warning: thompson.anholt.net: anholt set sender to eric@anholt.net using -f From: Eric Anholt To: martinko In-Reply-To: <445E4FCC.10605@pobox.sk> References: <445E4FCC.10605@pobox.sk> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-ykNqQ8x82Z8GtGXs+2ka" Date: Thu, 11 May 2006 16:27:14 -0700 Message-Id: <1147390034.9156.5.camel@thompson> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 FreeBSD GNOME Team Port Cc: freebsd-x11@FreeBSD.org, freebsd-questions@FreeBSD.org Subject: Re: X11 6.9 issue -- options "AGPMode" and "AGPFastWrite" X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 May 2006 21:05:33 -0000 --=-ykNqQ8x82Z8GtGXs+2ka Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Sun, 2006-05-07 at 21:51 +0200, martinko wrote:=20 > hello list! >=20 > i've just upgraded X11 from 6.8.2 to 6.9.0 and run into the following iss= ue: >=20 > after starting x11 for the first time the screen went black and console=20 > was inaccessible (i had to reboot). when i tried the generated xorg.conf=20 > (`Xorg -configure`) it worked. so i started comparing my old config file=20 > with the new one and found out that the following two options i had been=20 > using are the root of the problem: > Option "AGPMode" "4" # ++ 2005-02-11 mato > Option "AGPFastWrite" # ++ 2005-02-11 mato > they just cannot be set both at the same time now. > and i wonder why. > and also i wonder which one to comment out and which one to keep (if any=20 > at all). Comment them both out and live a happier life with a more stable computer. In my testing (and as far as I know, I'm the only one who has done performance comparisons with AGPMode), AGPMode 4 provided no meaningful performance improvement except under contrived circumstances. AGPFastWrite is the most unstable option ever, and I couldn't benchmark because it crashes. We've threatened to just disconnect these options upstream and not tell anyone, because they're that harmful but people seem to think they're secret performance sauce that the developers don't want to give them. --=20 Eric Anholt anholt@FreeBSD.org eric@anholt.net eric.anholt@intel.com --=-ykNqQ8x82Z8GtGXs+2ka Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD4DBQBEY8hSHUdvYGzw6vcRAo4lAJ4i3i+hTMYuccCoU+cPW0WUylchJgCY7aoN 7rkBflBAUMBG/LPPuybNAg== =cgaw -----END PGP SIGNATURE----- --=-ykNqQ8x82Z8GtGXs+2ka--