Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755381AbYKDPYL (ORCPT ); Tue, 4 Nov 2008 10:24:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755203AbYKDPXt (ORCPT ); Tue, 4 Nov 2008 10:23:49 -0500 Received: from iolanthe.rowland.org ([192.131.102.54]:54599 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754920AbYKDPXr (ORCPT ); Tue, 4 Nov 2008 10:23:47 -0500 Date: Tue, 4 Nov 2008 10:23:46 -0500 (EST) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Norbert Preining cc: Mattia Dongili , Kernel development list , USB list Subject: Re: usb device not showing up In-Reply-To: <20081104093710.GC15846@gamma.logic.tuwien.ac.at> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1556 Lines: 41 On Tue, 4 Nov 2008, Norbert Preining wrote: > Hi Alan, > > On Mo, 03 Nov 2008, Alan Stern wrote: > > What happens if you leave the modem turned off until after Linux is > > running? If it does not show up then a usbmon trace would be helpful > > (see Documentation/usb/usbmon.txt for instructions). > > I can run usbmon, but I am not sure what you mean with "leave the modem > turned off until after Linux is running". I must have misunderstood your earlier message, where you wrote: > Interestingly this device does disappear if I cold boot into linux. > > So: > - First booting Vista, then RE-booting (not turning it off in the > meantime) into linux gives me that device and everything works. By "it", did you mean the laptop or the modem? > If I start from turned off state of the laptop and boot into linux the > device is not showing up. Is it that state you are interested in getting > the usbmon output? No. I'm interested in seeing the usbmon output for when the modem is first detected by the USB subsystem. During a normal boot this will happen before you can start usbmon. If you can't boot with the modem off, then try this instead: Unload ehci-hcd, uhci-hcd, and ohci-hcd, then start up usbmon (copy the 0u file) and reload whichever driver the modem attaches to. 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/