linux-kernel - Re: usb device not showing up

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Message-ID: <20081104215829.GA2880@gamma.logic.tuwien.ac.at>
Date:	Tue, 4 Nov 2008 22:58:29 +0100
From:	Norbert Preining <preining@...ic.at>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	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

On Di, 04 Nov 2008, Alan Stern wrote:
> > > 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.

Ok, here it is. Booted with init=/bin/bash, no modules loaded, mounted
/sys and debugfs, cat u0 > usbmon.txt. Then load uhci-hcd, then load hso
modules.

Finally, kill the cat process.

Output is the attached usmon.txt file. 

For completeness, it is 
	Bus 004 Device 002: ID 0af0:6911 Option 
we are talking about, or 
T:  Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs=  1
P:  Vendor=0af0 ProdID=6911 Rev= 0.00
S:  Manufacturer=Option N.V.
S:  Product=Globetrotter HSDPA Modem  
S:  SerialNumber=Serial Number
C:* #Ifs= 3 Cfg#= 1 Atr=c0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=hso
E:  Ad=83(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=03(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=85(I) Atr=03(Int.) MxPS=  16 Ivl=128ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=hso
E:  Ad=84(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=04(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=hso
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=128ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

Thanks for any comments and suggestions.

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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View attachment "usbmon.txt" of type "text/plain" (23631 bytes)