From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kyle Moffett Subject: Re: Regression: radeonfb: No synchronisation on CRT with linux-2.6.13-rc5 Date: Sun, 7 Aug 2005 22:41:45 -0400 Message-ID: <2F9E1CB1-CAF5-491A-A410-CFD6E2FEAD07@mac.com> References: <1123195493.30257.75.camel@gaston> <1123401069.30257.102.camel@gaston> <3EF2003B-12DF-4EBB-B304-59614AEFAA09@mac.com> <1123431219.30257.115.camel@gaston> <96358AEB-784F-444E-A0BA-04AD920284B3@mac.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 (Apple Message framework v733) 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.sourceforge.net with esmtp (Exim 4.30) id 1E1xaQ-0000VS-GY for linux-fbdev-devel@lists.sourceforge.net; Sun, 07 Aug 2005 19:41:58 -0700 Received: from smtpout.mac.com ([17.250.248.97]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1E1xaQ-0003vi-Dp for linux-fbdev-devel@lists.sourceforge.net; Sun, 07 Aug 2005 19:41:58 -0700 In-Reply-To: <96358AEB-784F-444E-A0BA-04AD920284B3@mac.com> Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii"; delsp="yes"; format="flowed" To: Kyle Moffett Cc: Benjamin Herrenschmidt , Bodo Eggert <7eggert@gmx.de>, LKML , linux-fbdev-devel@lists.sourceforge.net On Aug 7, 2005, at 21:13:54, Kyle Moffett wrote: > On Aug 7, 2005, at 12:13:38, Benjamin Herrenschmidt wrote: >> _However_ there is an unrelated problem with some panels, >> including some >> of the 17": The panel doesn't always "sync" properly. This seem to be >> related to some subtle timing issue in the LVDS code but I don't know >> exactly what yet. You can usually get it back by repeately turning >> the >> backlight all the way down (which shuts the panel off) and back up >> until >> it "catches". > > Hmm. This doesn't really fit as my issues are very reproducible. The > behaviour under stock Debian 2.6.8 is identical during reboots and > after > fblevel 0 ; sleep X ; fblevel 15. Likewise, stock 2.6.11, > 2.6.12.4, and > 2.6.13-rc5, although I'm just getting back to testing things. Damn. As soon as I say this, I go back and am completely unable to make 2.6.13-rc5 reproduce the issue. *grumble* black magic *grumble* :-D. Cheers, Kyle Moffett -- There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult. -- C.A.R. Hoare ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf