Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755102AbYFOXCZ (ORCPT ); Sun, 15 Jun 2008 19:02:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751236AbYFOXCP (ORCPT ); Sun, 15 Jun 2008 19:02:15 -0400 Received: from cpsmtpo-eml01.kpnxchange.com ([213.75.38.150]:29847 "EHLO cpsmtpo-eml01.kpnxchange.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750699AbYFOXCP convert rfc822-to-8bit (ORCPT ); Sun, 15 Jun 2008 19:02:15 -0400 From: Frans Pop To: "Siddha, Suresh B" Subject: Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer Date: Mon, 16 Jun 2008 01:02:10 +0200 User-Agent: KMail/1.9.9 Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , "Pallipadi, Venkatesh" , Ingo Molnar , "arjan@linux.intel.com" , "jbarnes@virtuousgeek.org" References: <200806142359.36613.elendil@planet.nl> <8B23168BCBB43B49A4C8EAB32D4B62F1061F3A82@orsmsx505.amr.corp.intel.com> In-Reply-To: <8B23168BCBB43B49A4C8EAB32D4B62F1061F3A82@orsmsx505.amr.corp.intel.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Message-Id: <200806160102.11717.elendil@planet.nl> X-OriginalArrivalTime: 15 Jun 2008 23:02:12.0324 (UTC) FILETIME=[D88DA240:01C8CF3B] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2946 Lines: 71 On Sunday 15 June 2008, Siddha, Suresh B wrote: > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10843 > > Subject : Display artifacts on XOrg logout with PAT kernel > > and VESA framebuffer > > Submitter : Frans Pop > > Date : 2008-05-31 14:04 (15 days old) > > References : http://lkml.org/lkml/2008/6/7/206 > > Can you also check, if there is any impact with kernel boot param for > vesafb "mtrr:3"? Hello Suresh. Thanks for responding. I've done 4 successive boots with the boot parameters as shown below. Each boot was basically: set correct parameters in grub -> login to KDE -> reboot and check for artifacts. 1) (none) --> clean 2) vga=791 --> artifacts 3) vga=791 nopat --> clean 4) vga=791 video=vesafb:mtrr:3 --> artifacts So the mtrr option did not help (if I passed it correctly; the double ":" is somewhat non-intuitive). The kernel log also does not show any difference I can see in the last boot, but I don't know if the mtrr option is supposed to show up in any way. >From the kernel log for each boot: 1) x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 Console: colour VGA+ 80x25 console [tty0] enabled 2) x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 Console: colour dummy device 80x25 console [tty0] enabled vesafb: framebuffer at 0x80000000, mapped to 0xffffc20000900000, using 3072k, total 7872k vesafb: mode is 1024x768x16, linelength=2048, pages=4 vesafb: scrolling: redraw vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0 Console: switching to colour frame buffer device 128x48 fb0: VESA VGA frame buffer device 3) PAT support disabled Console: colour dummy device 80x25 console [tty0] enabled vesafb: framebuffer at 0x80000000, mapped to 0xffffc20000900000, using 3072k, total 7872k vesafb: mode is 1024x768x16, linelength=2048, pages=4 vesafb: scrolling: redraw vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0 Console: switching to colour frame buffer device 128x48 fb0: VESA VGA frame buffer device 4) x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 Console: colour dummy device 80x25 console [tty0] enabled vesafb: framebuffer at 0x80000000, mapped to 0xffffc20000900000, using 3072k, total 7872k vesafb: mode is 1024x768x16, linelength=2048, pages=4 vesafb: scrolling: redraw vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0 Console: switching to colour frame buffer device 128x48 fb0: VESA VGA frame buffer device Hope that helps. If you need any additional information, please ask. Cheers, FJP -- 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/