Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757893Ab1DXXFT (ORCPT ); Sun, 24 Apr 2011 19:05:19 -0400 Received: from moutng.kundenserver.de ([212.227.126.186]:62246 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757805Ab1DXXFP (ORCPT ); Sun, 24 Apr 2011 19:05:15 -0400 From: Martin To: "vger.kernel.org, " Subject: ehci_hcd 0000:00:1d.0: HC died; cleaning up Date: Mon, 25 Apr 2011 01:05:13 +0200 User-Agent: KMail/1.13.6 (Linux/2.6.38.4-ck3; KDE/4.5.5; x86_64; ; ) MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201104250105.13141.marogge@onlinehome.de> X-Provags-ID: V02:K0:vEDYkWsejFiwVV74Llphzhrq9n2z+y8hCdFcoMX4zMu GQoMxR2WOPijGKryPf/ejHZFYebhnin/tD66nrsqBDDkJCDNo1 S770zd87DLSHb2/fiHBIqNW3m/079nkRRSuw1A+MhzZ0DDLNl9 9Sy6FCyUc+u+15bw2ICqAObgycAQVErIY0XDJMRPdDy/sjUHS+ pt9r6kpVuX/yZJ4IEMIOg== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1977 Lines: 42 recently, when plugging in my webcam (UVC driver) my USB stack seems to collapse. All USB devices including the mouse & keyboard stop working, the syslog says: Apr 24 19:03:45 arnold kernel: ehci_hcd 0000:00:1d.0: fatal error Apr 24 19:03:45 arnold kernel: ehci_hcd 0000:00:1d.0: force halt; handshake ffffc90000052024 00004000 00004000 -> -110 Apr 24 19:03:45 arnold kernel: ehci_hcd 0000:00:1d.0: HC died; cleaning up Apr 24 19:03:45 arnold kernel: usb 2-1.3: device descriptor read/all, error -108 Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot disable port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot reset port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot disable port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot reset port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot disable port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot reset port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot disable port 3 (err = -19) Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: unable to enumerate USB device on port 3 Apr 24 19:03:45 arnold kernel: hub 2-1:1.0: cannot disable port 3 (err = -19) Cycling through run level 1 (which restarts udev etc.) doesn't help, only remedy I found is a reboot. So far it is only the UVC webcam causing the problem. Memory sticks seem to work as expected. I seem to remember it used to work previously and most likely one of my recent kernel upgrades is the trigger (currently on 2.6.38.4). However, before I delve into bisecting (the weather forecast for Easter Monday is too good): can someone tell what's going on from those error codes in the syslog? Thanks, Martin -- 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/