From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759519AbXKUO0s (ORCPT ); Wed, 21 Nov 2007 09:26:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754064AbXKUO0l (ORCPT ); Wed, 21 Nov 2007 09:26:41 -0500 Received: from s2.ukfsn.org ([217.158.120.143]:47063 "EHLO mail.ukfsn.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753624AbXKUO0k (ORCPT ); Wed, 21 Nov 2007 09:26:40 -0500 To: benh@kernel.crashing.org Cc: Jean Delvare , linux-kernel@vger.kernel.org, Dennis Munsie , Michael Buesch Subject: Re: radeonfb i2c regression post-2.6.18. References: <1195427766.7022.18.camel@pasglop> From: Roger Leigh Date: Wed, 21 Nov 2007 09:42:09 +0000 In-Reply-To: <1195427766.7022.18.camel@pasglop> (Benjamin Herrenschmidt's message of "Mon\, 19 Nov 2007 10\:16\:06 +1100") Message-ID: <87oddoaqa6.fsf@hardknott.home> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --=-=-= Content-Transfer-Encoding: quoted-printable Benjamin Herrenschmidt writes: > On Sun, 2007-11-18 at 21:58 +0000, Roger Leigh wrote: >> Hi folks, >>=20 >> I'm using an Apple Cinema Display connected via DVI to an Apple Mac >> Mini with Radeon 9200 graphics. This used to work fine, but with >> kernels >=3D 2.6.19, the monitor powers off as soon as the framebuffer >> is initialised, making for a less than usable system. I've tested >> with 2.6.(19|2[012]), and I didn't see any related changes in 2.6.23. > > .../... > > Can you try the patch from Jean that I pasted below and let us know if > it helps ? It looks like the releasing of the i2c lines may have been > done backward. This patch fixes the problem. The monitor stays powered on during the switch to the framebuffer. Thanks, Roger =2D-=20 .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail. --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHQ/11VcFcaSW/uEgRApIBAKDlOxkHy+ItRHnVDKCxY2k1zUYN1gCgxw6V XKgee3XvZSYeaqGqghclnYg= =9Fig -----END PGP SIGNATURE----- --=-=-=--