From owner-freebsd-current@FreeBSD.ORG Wed Oct 8 11:32:29 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 582C4106569D for ; Wed, 8 Oct 2008 11:32:29 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from cmail.optima.ua (cmail.optima.ua [195.248.191.121]) by mx1.freebsd.org (Postfix) with ESMTP id CA38B8FC15 for ; Wed, 8 Oct 2008 11:32:28 +0000 (UTC) (envelope-from mav@FreeBSD.org) X-Spam-Flag: SKIP X-Spam-Yversion: Spamooborona-2.1.0 Received: from orphanage.alkar.net (account mav@alkar.net [212.86.226.11] verified) by cmail.optima.ua (CommuniGate Pro SMTP 5.1.14) with ESMTPA id 224064757; Wed, 08 Oct 2008 14:32:27 +0300 Message-ID: <48EC9A4B.90706@FreeBSD.org> Date: Wed, 08 Oct 2008 14:32:27 +0300 From: Alexander Motin User-Agent: Thunderbird 2.0.0.14 (X11/20080612) MIME-Version: 1.0 To: Adam McDougall References: <1222644184.00019171.1222632003@10.7.7.3> <1222809781.00019960.1222796402@10.7.7.3> <1223436192.00023068.1223424004@10.7.7.3> In-Reply-To: <1223436192.00023068.1223424004@10.7.7.3> X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: 7bit Cc: FreeBSD-Current Subject: Re: Hard crash with new snd_hda. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Oct 2008 11:32:29 -0000 Adam McDougall wrote: >> This is probably the late consequence. I think debugging at this point >> won't give much. At least it will require deep data structures digging. >> >> You can enable some more debugging with setting hw.snd.verbose=4. May >> be it will give some clues. If not, probably we should try to add some >> debug printing near channel-to-device assignment loop near line 7170. >> We should try to find is the channel number was incorrectly set >> initially or it was erased later or channel memory itself was erased. >> >> The only idea I have now about the problem is that it may be related >> to the two audio codecs that you have on the same HDA bus. You are the >> first person who reported about such setup, so it wasn't ever tested. >> > I think I am having a similar issue, discovered it on a new model Dell > Latitude E6500. It is probably seeing a codec for HDMI and modem in > addition to the normal sound. Sound works if I patch the old hda driver > to detect my codec on 7.1, but I just got 8 installed last night. If I > have KDB_UNATTENDED and a dumpdev, it either hangs at the beginning of > the dump or reboots almost immediately after the panic. I can try to > hook up a serial or firewire console later and gather more info, but > tonight I might be too busy. In the meantime, here are two screenshots > of the panic and the backtrace: > http://www.egr.msu.edu/~mcdouga9/pics/1007081830.jpg > http://www.egr.msu.edu/~mcdouga9/pics/1007081831.jpg Looks very alike as I can see without verbose messages. I will try to think more about it, but as I can't reproduce it myself probably you will probably have to add some additional debugging as I have written to Frank. -- Alexander Motin