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Message-ID: <20081106225713.GD11406@gamma.logic.tuwien.ac.at>
Date: Thu, 6 Nov 2008 23:57:13 +0100
From: Norbert Preining <preining@...ic.at>
To: Alan Stern <stern@...land.harvard.edu>
Cc: Pete Zaitcev <zaitcev@...hat.com>,
Mattia Dongili <malattia@...ux.it>,
Kernel development list <linux-kernel@...r.kernel.org>,
USB list <linux-usb@...r.kernel.org>
Subject: Re: usb device not showing up
Hi Alan,
On Do, 06 Nov 2008, Alan Stern wrote:
> Okay. In the earlier (working) test, the modem showed up on bus 4, not
> bus 2. Not that it matters much -- the modem didn't show up at all in
Sorry, it is always bus 4, i meant interface (or how do you call it) 2,
bus id 004:002
> this test, on any bus. Its USB interface seems to be electrically
> disconnected or turned off.
Right.
> should start working, but I have no idea what that would be. It's not
> a USB issue; as far as USB is concerned the device just isn't there at
Ok, if it is not an usb issue, I guess I have to hope for some fix in
sony-laptop module.
> Interestingly, this trace appears to be missing some events. There's a
> gap between timestamps 4284549076 and 4284645743 (the timestamps are in
> the second column) where we should see the initialization of bus 5 and
> bus 6. Instead there's a 100-ms delay in which nothing happens,
> followed later on by the second initialization phase for those two
> buses.
>
> I have to wonder... Did you remove any part of the trace? Did usbmon
No. I sent you the output as it was saved on my hard disk. No editing
involved.
> malfunction? Did parts of the initialization for those two buses
> really get skipped (I can't imagine how)?
No idea. I can redo any tests you want, but I can guarantee that I
didn't tinker with the usbmon-bad.txt file itself, it was created with
cat .../0u > usbmon-bad.txt
Best wishes
Norbert
-------------------------------------------------------------------------------
Dr. Norbert Preining <preining@...ic.at> Vienna University of Technology
Debian Developer <preining@...ian.org> Debian TeX Group
gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
-------------------------------------------------------------------------------
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