From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752140Ab0DKPHb (ORCPT ); Sun, 11 Apr 2010 11:07:31 -0400 Received: from ksp.mff.cuni.cz ([195.113.26.206]:51910 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752032Ab0DKPHa (ORCPT ); Sun, 11 Apr 2010 11:07:30 -0400 Date: Sun, 11 Apr 2010 17:07:18 +0200 From: Pavel Machek To: Bernie Thompson Cc: roberto@unbit.it, gregkh@suse.de, Cyril Hrubis , kernel list Subject: Re: staging: udlfb -- staging version does not work, external does Message-ID: <20100411150718.GA1401@ucw.cz> References: <20100411072625.GA9926@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > Thanks for the bug report! You are welcome :-). > > I tried getting udlfb to work in 2.6.34-rc*, and could not. > > What CPU arch are you on, and is it 32 or 64? 32bit Intel Core Duo. > > 1) it hates vga console. If text-mode vga console is used (not > > vesafb), system dies immeditaly during insmod or during boot if > > monolithic kernel is used. > > It is a kernel oops? Where does the crash happen? Can you email any > udlfb-specific output in logs (especially /var/log/kern.log)? It just locks :-(. > > 2) it does not display anything. With vesafb, it will not lockup the > > system, and /dev/fb1 is created... Unfortunately, all I get is green > > screen. > > The green screen means udlfb has initialized device and started > rendering. So what this likely means is everything is fine -- just > fbcon has matched against fb0, which is why it's not using the fb1 > udlfb screen. Yep, but I still should be able to produce output on it. > > (I tried testing with cat /bin/bash > /dev/fb1 and cat /dev/fb0 > > > /dev/fb1). > > I don't think redirects like that will work. The fbcon module loads > against one fb, and can only be switch with utilities like "fbset" IMO they should work. First one should fill the screen with ~random noise, and second should copy graphical representation on fb0 to fb1. If they have same resolution and color depth, I should be looking at copy of my console... (And it does work with this driver: > > So I tried > > > >    Roberto De Ioris roberto at unbit.it > >    Wed Jun 10 08:00:07 PDT 2009 ). Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html