Re: Reset hanging Huawei USB-2.0 Internet stick

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On Wed, 15 Jun 2016, Sedat Dilek wrote:

> Hi Alan,
> 
> I updated my usb-ids on my Ubuntu 12.04 LTS (AMD64).
> Background was my ASMedia ASM-104x USB-3.0 controller/hub shows no
> human-readable vendor-string etc.
> 
> While checking parallelelly a new usbutils release, I saw your
> "usbreset" example program in the corresponding GitHub repo [1].
> 
> Sometimes my Internet connection does not get established and I do not
> want to plug-off it from my hardware (usb-2 port).
> I hope your usbrest program can do the trick software-technically.
> 
> So how do I reset my Internet stick?
> 
> $ lsusb | grep -i huawei
> Bus 001 Device 005: ID 12d1:1436 Huawei Technologies Co., Ltd. Broadband stick
> 
> [ Excerpts from my dmesg-outputs ]
> 
> [   22.352232] cdc_ether 1-1.2:1.1 wwan0: register 'cdc_ether' at
> usb-0000:00:1a.0-1.2, Mobile Broadband Network Device,
> 02:50:f3:00:00:00
> [   22.395891] option 1-1.2:1.0: GSM modem (1-port) converter detected
> [   22.399676] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB0
> [   22.399997] option 1-1.2:1.3: GSM modem (1-port) converter detected
> [   22.400557] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB1
> [   22.400639] option 1-1.2:1.4: GSM modem (1-port) converter detected
> [   22.401041] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB2
> 
> Not sure how to usbreset - all three /dev/ttyUSB[0-2] ?
> 
> $ sudo ./usbreset $DEVFN
> Usage: usbreset device-filename
> 
> If you need more informations if my attached linux-config,
> dmesg-output and 'lsusb -vvv' outputs don't help, please let me know.

sudo ./usbreset /dev/bus/usb/001/005

001 and 005 are the Bus and Device numbers from the lsusb output.

Alan Stern

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