Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161022AbXBPOju (ORCPT ); Fri, 16 Feb 2007 09:39:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964945AbXBPOju (ORCPT ); Fri, 16 Feb 2007 09:39:50 -0500 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:8580 "EHLO pd2mo2so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964932AbXBPOjt (ORCPT ); Fri, 16 Feb 2007 09:39:49 -0500 Date: Fri, 16 Feb 2007 06:39:45 -0800 (PST) From: Zwane Mwaikambo Subject: Re: [PATCH] Don't probe for DDC on VBE1.2 In-reply-to: <20070215230243.515ec6b3.akpm@linux-foundation.org> To: Andrew Morton Cc: Linux Kernel , Andi Kleen , Tobias Hain , "H. Peter Anvin" Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII References: <20070215205658.56096f97.akpm@linux-foundation.org> <20070215214506.f795acc4.akpm@linux-foundation.org> <20070215215125.9161e3dc.akpm@linux-foundation.org> <20070215230243.515ec6b3.akpm@linux-foundation.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2566 Lines: 86 On Thu, 15 Feb 2007, Andrew Morton wrote: > It's not an X problem - the screen is black immediately upon loading the > kernel. > > But I guess you knew that and you're just after display info: > http://userweb.kernel.org/~akpm/Xorg.0.log.txt Thanks, the X log told me your VBE version. I tried to reproduce it on my thinkpad which seems to have a very similar video setup to no avail, Could you test the following on the VAIO? If this isn't the case, i suspect i'm corrupting your modelist. P.s. Thanks for the vga=0x263! Index: linux-2.6.20-mm1/arch/i386/boot/video.S =================================================================== RCS file: /home/cvsroot/linux-2.6.20-mm1/arch/i386/boot/video.S,v retrieving revision 1.1.1.1 diff -u -p -B -r1.1.1.1 video.S --- linux-2.6.20-mm1/arch/i386/boot/video.S 15 Feb 2007 17:35:57 -0000 1.1.1.1 +++ linux-2.6.20-mm1/arch/i386/boot/video.S 16 Feb 2007 12:58:20 -0000 @@ -1945,6 +1945,25 @@ store_edid: rep stosl + pushw %es + pushw %ds + popw %es + leaw modelist+1024, %di + movw $0x02b3, %ax + movw %ax, (%di) + movw $0x9d4a, %ax + movw %ax, 2(%di) # set signature to "vbe2" + + movw $0x4f00, %ax + int $0x10 + popw %es + + cmpw $0x004f, %ax + jne no_edid + + cmpw $0x0200, 4(%di) # only do EDID on >= VBE2.0 + jl no_edid + pushw %es # save ES xorw %di, %di # Report Capability pushw %di Index: linux-2.6.20-mm1/arch/x86_64/boot/video.S =================================================================== RCS file: /home/cvsroot/linux-2.6.20-mm1/arch/x86_64/boot/video.S,v retrieving revision 1.1.1.1 diff -u -p -B -r1.1.1.1 video.S --- linux-2.6.20-mm1/arch/x86_64/boot/video.S 15 Feb 2007 17:36:18 -0000 1.1.1.1 +++ linux-2.6.20-mm1/arch/x86_64/boot/video.S 16 Feb 2007 12:57:57 -0000 @@ -1945,6 +1945,25 @@ store_edid: rep stosl + pushw %es + pushw %ds + popw %es + leaw modelist+1024, %di + movw $0x02b3, %ax + movw %ax, (%di) + movw $0x9d4a, %ax + movw %ax, 2(%di) # set signature to "vbe2" + + movw $0x4f00, %ax + int $0x10 + popw %es + + cmpw $0x004f, %ax + jne no_edid + + cmpw $0x0200, 4(%di) # only do EDID on >= VBE2.0 + jl no_edid + pushw %es # save ES xorw %di, %di # Report Capability pushw %di - 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/