From owner-freebsd-current@FreeBSD.ORG Thu Nov 13 18:15:16 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 51DACEB4 for ; Thu, 13 Nov 2014 18:15:16 +0000 (UTC) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.95.76.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "troutmask.apl.washington.edu", Issuer "troutmask.apl.washington.edu" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 1516B9 for ; Thu, 13 Nov 2014 18:15:16 +0000 (UTC) Received: from troutmask.apl.washington.edu (localhost.apl.washington.edu [127.0.0.1]) by troutmask.apl.washington.edu (8.14.9/8.14.9) with ESMTP id sADIFFZ9019138 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Thu, 13 Nov 2014 10:15:15 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.14.9/8.14.9/Submit) id sADIFFJu019137 for freebsd-current@freebsd.org; Thu, 13 Nov 2014 10:15:15 -0800 (PST) (envelope-from sgk) Date: Thu, 13 Nov 2014 10:15:15 -0800 From: Steve Kargl To: freebsd-current@freebsd.org Subject: Re: USB locks up system -- WAS Re: shutdown or acpi problem Message-ID: <20141113181515.GA19117@troutmask.apl.washington.edu> References: <20141112224212.GA14013@troutmask.apl.washington.edu> <20141113172533.GA18690@troutmask.apl.washington.edu> <20141113180332.GA18990@troutmask.apl.washington.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141113180332.GA18990@troutmask.apl.washington.edu> User-Agent: Mutt/1.5.23 (2014-03-12) 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: Thu, 13 Nov 2014 18:15:16 -0000 On Thu, Nov 13, 2014 at 10:03:32AM -0800, Steve Kargl wrote: > On Thu, Nov 13, 2014 at 09:25:33AM -0800, Steve Kargl wrote: > > On Wed, Nov 12, 2014 at 02:42:13PM -0800, Steve Kargl wrote: > > > I have a kernel/world from r274273 sources, which is exhibiting a new > > > issue on my old laptop. Neither 'shutdown -p now' nor 'shutdown -r now' > > > work. I get to the end of shutdown and see for example > > > > > > All buffers synced > > > Uptime: 4h23m15s > > > > > > and then the laptop just sits there. It does not power off with > > > the -p option nor does it reboot with the -r. Has anyone else > > > seen this behavior? > > > > > > > The problem appears to be related to a recent change in the > > USB stack. If I have the following drive plugged into a > > usb port, the above behavior is observed on shutdown. > > Adding hw.usb.no_shutdown_wait: 1 to /boot/loader.conf appears to work around the 'shutdown -p now' and 'shutdown -r now' issue. Unfortunately, the bricking of the laptop is not affected by this sysctl. Once a device is plugged into a usb, it must remain plugged in. -- Steve