From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vassilis Virvilis Subject: Re: Twister savagefb doesn't sync Date: Tue, 06 Jun 2006 12:57:43 +0300 Message-ID: <44855197.7040801@iit.demokritos.gr> References: <44698356.80806@iit.demokritos.gr> <447381E9.4060705@gmail.com> <447803FC.8050009@iit.demokritos.gr> <44781B3A.5030406@gmail.com> <44781BFB.5020708@gmail.com> <447994A8.30600@iit.demokritos.gr> <447A3CC0.9060403@gmail.com> <447AF58E.3050803@iit.demokritos.gr> <447B60D7.8020204@gmail.com> <44845DEC.1000608@iit.demokritos.gr> Reply-To: vasvir@iit.demokritos.gr, 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-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1FnYEO-0007al-Ts for linux-fbdev-devel@lists.sourceforge.net; Tue, 06 Jun 2006 02:52:13 -0700 Received: from zeus.iit.demokritos.gr ([143.233.226.2]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1FnYEM-0002Aq-9j for linux-fbdev-devel@lists.sourceforge.net; Tue, 06 Jun 2006 02:52:12 -0700 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: Alex Deucher Cc: linux-fbdev-devel@lists.sourceforge.net, "Antonino A. Daplas" Alex Deucher wrote: > On 6/5/06, Vassilis Virvilis wrote: > > The reason the savage xorg drver uses the bios is because almost every > panel they connect to the chip seems to require fairly custom timings. > the twisters and prosavages are even worse than the discrete chips. > Also, only the bios seems to know the magic incantation necessary for > dualhead. I tried for a while to add non-bios mode setting to crtc2 > without much luck. I don't care for dualhead right now. I can imagine it is 4 times weirder than my current setup. What is crtc*? > > For a short term fix, just program the registers with the new values > from the bios. You may be able to just get away with adjusting the > crtc1 dclk (SR12, SR13, SR29). I will try that. Thanks for the suggestion. A real fix may require special > calculations or tables for different chip/panel combos. > I will try for both of my monitors and I will report here any success or failure unless of course I am told that this info is not desirable. Do you know if changing the number of colors 256/64K/16M requires clock adjustments (SR12, SR13, SR29)? Thanks for answering. .bill