From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lutomirski Subject: Re: [PATCH] drm/i915: Revert i915.semaphore=1 default from 47ae63e0 Date: Fri, 10 Jun 2011 10:06:39 -0400 Message-ID: References: <87ipsiglms.fsf@eliezer.anholt.net> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail-pw0-f49.google.com (mail-pw0-f49.google.com [209.85.160.49]) by gabe.freedesktop.org (Postfix) with ESMTP id 66AF79E9E5 for ; Fri, 10 Jun 2011 07:06:59 -0700 (PDT) Received: by pwi8 with SMTP id 8so1772904pwi.36 for ; Fri, 10 Jun 2011 07:06:59 -0700 (PDT) In-Reply-To: <87ipsiglms.fsf@eliezer.anholt.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Eric Anholt Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Tue, Jun 7, 2011 at 3:12 AM, Eric Anholt wrote: > On Thu, 19 May 2011 16:50:00 -0400, Andrew Lutomirski wrot= e: >> On Thu, May 19, 2011 at 3:56 PM, Keith Packard wrote: >> > On Fri, 13 May 2011 12:14:54 -0400, Andy Lutomirski wro= te: >> > >> >> My Q67 / i7-2600 box has rev09 Sandy Bridge graphics. =A0It hangs >> >> instantly when GNOME loads and it hangs so hard the reset button >> >> doesn't work. =A0Setting i915.semaphore=3D0 fixes it. >> > >> > Can you describe precisely what hardware you have? The make and model = of >> > the motherboard and the exact model of CPU? I'd like to get this issue >> > resolved for 2.6.40 and need to have a reliable way to reproduce the >> > hang; replicating your hardware may be a good way of doing that. >> >> Intel DQ67SW. =A0AMT is enabled but the port 5900 is closed (because I >> can't figure out how to turn on the kvm). >> >> The system boots from UEFI (which is buggy, both because efifb doesn't >> recognize my hardware, because asking the firmware for the boot menu >> causes all efivars entries to be ignored, and because unless I set >> reboot=3Dk the system crashes on reboot). >> >> Userspace is F15 running compiz (*not* gnome-shell). >> >> BIOS is SWQ6710H.86A.0051.2011.0413.1154. >> >> CPU is: >> processor =A0 =A0 =A0 : 0 >> vendor_id =A0 =A0 =A0 : GenuineIntel >> cpu family =A0 =A0 =A0: 6 >> model =A0 =A0 =A0 =A0 =A0 : 42 >> model name =A0 =A0 =A0: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz >> stepping =A0 =A0 =A0 =A0: 7 > > I fear this bug is just "getting more asynchronous with the GPU means we > trigger race conditions on the GPU more easily." =A0On that note, could > you retest with Mesa as of this commit, since I'm told this is a GT1 CPU: > > commit ef59049c5242a1be7fa59a182d342191185dd62b > Author: Eric Anholt > Date: =A0 Sun Jun 5 23:20:57 2011 -0700 > > =A0 =A0i965: Fix flipped GT1 vs GT2 URB VS entry count limits. > Nope -- I still got the reset-button-not-working hang. I'm pretty sure I installed mesa right -- I moved everything in /usr/lib64/dri out of the way and put the files in mesa/lib/ in there. --Andy