From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753837Ab1AYOPE (ORCPT ); Tue, 25 Jan 2011 09:15:04 -0500 Received: from mailout00.t-online.de ([194.25.134.16]:56358 "EHLO mailout00.t-online.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753208Ab1AYOPC (ORCPT ); Tue, 25 Jan 2011 09:15:02 -0500 Message-ID: <4D3EDACF.8040702@t-online.de> Date: Tue, 25 Jan 2011 15:14:39 +0100 From: Knut Petersen User-Agent: Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.1.16) Gecko/20101125 SUSE/3.0.11 Thunderbird/3.0.11 MIME-Version: 1.0 To: Chris Wilson CC: jesse.barnes@intel.com, linux-kernel@vger.kernel.org Subject: Re: [BUG/REGRESSION] DRM / i915 / 2.6.37 and 2.6.38-rc*: DVI output gets disabled/reenabled under load References: <4D3DC997.5040605@t-online.de> <0d30dc$krk6f6@orsmga001.jf.intel.com> <4D3EB90C.9020901@t-online.de> <0d30dc$krt8da@orsmga001.jf.intel.com> In-Reply-To: <0d30dc$krt8da@orsmga001.jf.intel.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-ID: VU8QukZFghM7WuwTJs0EvDjoJEXmokcWpUHCIuKQYVmaN1bbpIJHB-jBrscBH4yZEO X-TOI-MSGID: 9c0f4245-59fc-42d0-b815-8a18a738e14c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> I think LOG-2.6.38-rc2 shows a sign of an additional bug >> =========================================== >> [ 681.527815] [drm:drm_target_preferred], found mode 1280x1024 >> [ 681.531482] [drm:drm_setup_crtcs], picking CRTCs for 4096x4096 config >> >> Is 4096x4096 really reasonable? I don't think so, at least not for my >> hardware. >> > Yes, gen3 supports a maximum (square) framebuffer of 4096x4096. X works > for me with such a virtual screen size (i.e. panning). > > The complication comes in that the 3D pipeline is limited to 2048x2048 > coordinates. X tiles, mesa does not and uses software instead. Baring > bugs, it should work. > > If you do have a crash with a recent driver, let me know! > -Chris > > Well, I don't know if openSuSE 11.3 is recent enough. Setup: 2 Monitors, attached to VGA1 and DVI1, resolution 1280x1024 xrandr --output VGA1 --pos [1..768] ============================ Everything ok. Works as expected. xrandr --output VGA1 --pos 769 ======================== Xorg Log: [ 1936.486] X.Org X Server 1.8.0 Release Date: 2010-04-02 [ 1936.486] X Protocol Version 11, Revision 0 [ 1936.486] Build Operating System: openSUSE SUSE LINUX [ 1936.486] Current Operating System: Linux golem 2.6.38-rc2-kape #13 PREEMPT Mon Jan 24 18:31:22 CET 2011 i686 [ 1936.486] Kernel command line: root=/dev/sdb5 acpi_enforce_resources=lax drm.debug=0 5 [ 1936.486] Build Date: 19 August 2010 03:34:17PM [...................] [ 2199.625] Backtrace: [ 2199.625] 0: /usr/bin/Xorg (xorg_backtrace+0x37) [0x80986d7] [ 2199.626] 1: /usr/bin/Xorg (0x8048000+0x4e3fa) [0x80963fa] [ 2199.626] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb783640c] [ 2199.626] Segmentation fault at address (nil) [ 2199.626] Fatal server error: [ 2199.626] Caught signal 11 (Segmentation fault). Server aborting Nothing special in system log, but drm.loglevel was 0. cu, Knut