From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751446AbXA3Uo1 (ORCPT ); Tue, 30 Jan 2007 15:44:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751454AbXA3Uo1 (ORCPT ); Tue, 30 Jan 2007 15:44:27 -0500 Received: from jack.tiscali.it ([213.205.33.53]:38028 "EHLO jack.tiscali.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751446AbXA3Uo0 (ORCPT ); Tue, 30 Jan 2007 15:44:26 -0500 X-Greylist: delayed 359 seconds by postgrey-1.27 at vger.kernel.org; Tue, 30 Jan 2007 15:44:26 EST Date: Tue, 30 Jan 2007 21:33:01 +0100 From: Luca Tettamanti To: linux-fbdev-devel@lists.sourceforge.net Cc: Dave Airlie , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [Linux-fbdev-devel] [PATCH] nvidiafb: allow ignoring EDID info Message-ID: <20070130203301.GA15067@dreamland.darkstar.lan> References: <20070128160831.fb51347f.akpm@osdl.org> <21d7e9970701281612q56b694edp6efd1a5556dea3fe@mail.gmail.com> <20070128162907.370f5476.akpm@osdl.org> <21d7e9970701281639w57edc2efw4ba620d4c1bdcee7@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Il Mon, Jan 29, 2007 at 03:37:22PM +0100, Giuseppe Bilotta ha scritto: > On 1/29/07, Dave Airlie wrote: > > > > > Because most users won't even be aware of the module option: they'll just > > > > > know that their card doesn't work right. > > > > > > > > This isn't a card problem this is a monitor problem, the card just > > > > passes through the edid data from the monitor... or else the > > > > programming of the card registers from edid is wrong.. > > > > > > In which case the same problem would occur with different video cards, so > > > this patch should be some generic thing, available to all drivers, no? > > > > It should be in the fb layer not card specific.. as it may happen on any card... > > Although solving the problem at the fb layer level is probably the > correct/best way to do it, I am not aware of people having problems > with broken EDIDs and non-nVidia cards. By contrast, workarounds for > nVidia and broken EDIDs is a very common thing to do even on Windows. Not all drivers have support for reading EDID information, so in many cases it just "works". My old monitor had garbage in the EDID eeprom and I had to pass "ignore_edid" to radeonfb (before I reprogrammed the eeprom that is :P). > Plus, providing an fb-layer-level solution is way beyond my kernel > programming experience :) I'll try to code something in the weekend. Luca -- Do, or do not. There is no try. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luca Tettamanti Subject: Re: [PATCH] nvidiafb: allow ignoring EDID info Date: Tue, 30 Jan 2007 21:33:01 +0100 Message-ID: <20070130203301.GA15067@dreamland.darkstar.lan> References: <20070128160831.fb51347f.akpm@osdl.org> <21d7e9970701281612q56b694edp6efd1a5556dea3fe@mail.gmail.com> <20070128162907.370f5476.akpm@osdl.org> <21d7e9970701281639w57edc2efw4ba620d4c1bdcee7@mail.gmail.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1HBzq5-0006jU-HH for linux-fbdev-devel@lists.sourceforge.net; Tue, 30 Jan 2007 12:44:25 -0800 Received: from jack.tiscali.it ([213.205.33.53]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1HBzq2-0000jR-Rw for linux-fbdev-devel@lists.sourceforge.net; Tue, 30 Jan 2007 12:44:25 -0800 Content-Disposition: inline In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: linux-fbdev-devel@lists.sourceforge.net Cc: Andrew Morton , Dave Airlie , linux-kernel@vger.kernel.org Il Mon, Jan 29, 2007 at 03:37:22PM +0100, Giuseppe Bilotta ha scritto: > On 1/29/07, Dave Airlie wrote: > > > > > Because most users won't even be aware of the module option: they'll just > > > > > know that their card doesn't work right. > > > > > > > > This isn't a card problem this is a monitor problem, the card just > > > > passes through the edid data from the monitor... or else the > > > > programming of the card registers from edid is wrong.. > > > > > > In which case the same problem would occur with different video cards, so > > > this patch should be some generic thing, available to all drivers, no? > > > > It should be in the fb layer not card specific.. as it may happen on any card... > > Although solving the problem at the fb layer level is probably the > correct/best way to do it, I am not aware of people having problems > with broken EDIDs and non-nVidia cards. By contrast, workarounds for > nVidia and broken EDIDs is a very common thing to do even on Windows. Not all drivers have support for reading EDID information, so in many cases it just "works". My old monitor had garbage in the EDID eeprom and I had to pass "ignore_edid" to radeonfb (before I reprogrammed the eeprom that is :P). > Plus, providing an fb-layer-level solution is way beyond my kernel > programming experience :) I'll try to code something in the weekend. Luca -- Do, or do not. There is no try. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV