Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262198AbVCUXqa (ORCPT ); Mon, 21 Mar 2005 18:46:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261959AbVCUXnX (ORCPT ); Mon, 21 Mar 2005 18:43:23 -0500 Received: from mail.gmx.net ([213.165.64.20]:38079 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S262169AbVCUXl1 (ORCPT ); Mon, 21 Mar 2005 18:41:27 -0500 X-Authenticated: #20450766 Date: Tue, 22 Mar 2005 00:40:34 +0100 (CET) From: Guennadi Liakhovetski To: Andrew Morton cc: linux-kernel@vger.kernel.org, jim.hague@acm.org, linux-fbdev-devel@lists.sourceforge.net Subject: Re: [2.6.11 Permedia-2 Framebuffer] driver broken (?). In-Reply-To: <20050321145936.6f742d89.akpm@osdl.org> Message-ID: References: <20050321145936.6f742d89.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1521 Lines: 38 On Mon, 21 Mar 2005, Andrew Morton wrote: > Guennadi Liakhovetski wrote: > > > > Hi > > > > Worked on 2.6.10-rc2. With 2.6.11 during boot upon switching to fb, text > > becomes orange, penguins look sick (not sharp). X starts and runs normal > > (doesn't use fb), switching to vt not possible any more. Disabling > > fb-console in kernel config fixes VTs. Reverting pm2fb.c fixes the > > problem. > > Guennadi, could you please confirm that > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc1/2.6.12-rc1-mm1/broken-out/pm2fb-x-and-vt-switching-crash-fix.patch > > fixes this one? As discussed with Jim on linux-fbdev-devel this patch fixes the vt / X switching problem. We still don't know why starting with 2.4.11 I have to switch CONFIG_FB_PM2_FIFO_DISCONNECT off to restore colours / images. Jim says it is doubtful that this option brings any optimisations at all, still, it is a bit worrying, that something that worked with earlier kernels stopped working now. I traced this breakage down to the patch to pm2fb.c after 2.6.10-rc2. Jim wanted to try to reproduce this problem with my fb-geometry / colour settings, but I haven't heard from him since then, Jim? Thanks Guennadi --- Guennadi Liakhovetski - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/