Date: Tue, 12 May 2009 11:52:29 -0700 From: David Johnson <david@usermode.org> To: Robert Noland <rnoland@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: Xorg hangs with drmwtq in 7.2-RELEASE Message-ID: <200905121152.29572.david@usermode.org> In-Reply-To: <1242141471.1755.11.camel@balrog.2hip.net> References: <200905042015.29394.david@usermode.org> <200905091841.26274.david@usermode.org> <1242141471.1755.11.camel@balrog.2hip.net>
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On Tuesday 12 May 2009 08:17:51 am Robert Noland wrote: > On Sat, 2009-05-09 at 18:41 -0700, David Johnson wrote: > > On Friday 08 May 2009 03:31:04 pm Robert Noland wrote: > > > In order to guess what might be causing this, drm debugging needs to be > > > enabled before the hang, so that we can hopefully figure out what leads > > > up to the hung GPU. > > > > I'm not able to do that, but I did manage to get debug turned on and > > dmesg captured early enough to catch some additional information. I've > > place the full file online at http://www.usermode.org/misc/dmesg.txt, but > > am including some snippets here. Hopefully this is enough to move > > forward. > > > > -- > > David Johnson > > This trace still looks odd... This should have been a single trace, with debugging turned after X was hung. I turned debug on once, grabbed output of dmesg, then rebooted. 1) Run script to launch four windows in rapid succession. 2) Only two windows manage to make it up before X hangs. 3) Switch over to laptop, which is ssh'd into system 4) sysctl hw.drm.0.debug=1 5) dmesg > dmesg.txt 6) Done I may have made a mistake though, and briefly turned on debugging earlier in the session. I'll get another trace this evening when I have time, to double check. p.s. I've put 7.1-STABLE from March 13th on a different partition. I will add in commits until it breaks, to help narrow it down. I'm fairly sure it was something on the 15th or 16th. -- David Johnson
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