Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757603Ab1DHQcR (ORCPT ); Fri, 8 Apr 2011 12:32:17 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:56460 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757020Ab1DHQcP (ORCPT ); Fri, 8 Apr 2011 12:32:15 -0400 Date: Fri, 8 Apr 2011 12:32:12 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Zdenek Kabelac cc: USB list , Linux Kernel Mailing List Subject: Re: Endless loop with "detected XactErr" In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1128 Lines: 32 On Fri, 8 Apr 2011, Zdenek Kabelac wrote: > > You might want to track down the original source of the > > underlying error.  Since the machine was docked the entire time, the > > line saying: > > > > [ �473.873802] ACPI: \_SB_.GDCK - undocking > > > > definitely looks suspicious.  I bet if you can fix that then the USB > > problems will go away. > > Hmm looking now into more logs - it might have been used this: > > "echo 1 >/sys/devices/platform/dock.0/undock" > > for this particular testcase - I might have been checking several > combination and making modification of some pm script for this. > So yes - in this case the machine could have been undocked by the above command. > > Is that a major problem for USB ? Not normally, but maybe the software undock didn't work correctly. Or maybe it did work. What happens if you disable CONFIG_USB_DEBUG? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/