From owner-freebsd-current@FreeBSD.ORG Sun Nov 16 18:55:57 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 21F7AD40; Sun, 16 Nov 2014 18:55:57 +0000 (UTC) Received: from gromit.grondar.org (grandfather.grondar.org [IPv6:2a01:348:0:15:5d59:5c20:0:2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D703FA69; Sun, 16 Nov 2014 18:55:56 +0000 (UTC) Received: from [2001:470:9174:1:1854:2549:19e3:cc92] by gromit.grondar.org with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.84 (FreeBSD)) (envelope-from ) id 1Xq4zL-000Dzo-0L; Sun, 16 Nov 2014 18:55:55 +0000 Subject: Re: USB locks up system -- WAS Re: shutdown or acpi problem Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Content-Type: text/plain; charset=utf-8 From: Mark R V Murray In-Reply-To: <20141116185141.GB36021@troutmask.apl.washington.edu> Date: Sun, 16 Nov 2014 18:55:53 +0000 Content-Transfer-Encoding: quoted-printable Message-Id: <4443FEFB-17F1-4516-959F-4C70AB2A4382@FreeBSD.org> References: <546515BF.6030508@selasky.org> <20141113212206.GA20802@troutmask.apl.washington.edu> <20141116054141.GA33186@troutmask.apl.washington.edu> <20141116175102.GA35649@troutmask.apl.washington.edu> <1416162070.4781.186.camel@revolution.hippie.lan> <1416162718.4781.192.camel@revolution.hippie.lan> <4F3B4E02-0ADD-46EB-BB90-BF360E810585@FreeBSD.org> <20141116185141.GB36021@troutmask.apl.washington.edu> To: Steve Kargl X-Mailer: Apple Mail (2.1993) X-SA-Score: -1.0 Cc: Hans Petter Selasky , Adrian Chadd , freebsd-current , Dag-Erling Sm?rgrav , Ian Lepore X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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: Sun, 16 Nov 2014 18:55:57 -0000 > On 16 Nov 2014, at 18:51, Steve Kargl = wrote: >=20 >>=20 >> I?m sorry my commit caused the problem. >>=20 >=20 > Nothing to be sorry about. This is -current after all. Thanks :-) >> I?m also trying to find out why, but I don?t know enough about USB or >> mass-storage devices to know why, so this may take me a while. In the >> meanwhile, I?ll try to help by pointing out things I do know. >=20 > Yes, I did the bisection to find that r273872 exposes the problem. > What I don't know is if this is hardware specific to a Dell Latitude > D530 laptop, USB specific, or some weird interaction between the > random and USB. >=20 > What I also find odd is that I seem to be the only person seeing > this behavior when it is trivial for me to reproduce: boot laptop, > plug in usb device, wait usb recognizes the device, then unplug=20 > the device. Strange for me too. I=E2=80=99m not exactly being bombarded with bug = reports. > If you have not read the entire thread, once the laptop keyboard and > video output lock up, I can ssh into the laptop. If I run usbconfig, > it hangs, ^T tells me it is stuck in SX Lock, and the /dev/da0* = devices > have not been destroyed. Weirder and weirder :-(. Something with SX locks? Hmm. I do use those for attach and detach for RNG sources. Could it be that that stick of yours is somehow getting involved in the RNG source locks? M --=20 Mark R V Murray