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Bug#864604: usb-modeswitch: USB 3G modem is detected twice as "USB Mass Storage"

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  Bug#864604: usb-modeswitch: USB 3G modem is detected twice as "USB Mass Storage" Teemu Likonen <tlikonen@iki.fi> - 2017-06-11 18:40 +0200
    Bug#864604: Telewell TW-3G HSPA+ modem not detected (was: Bug#864604: usb-modeswitch: USB 3G modem is detected twice as "USB Mass Storage") Teemu Likonen <tlikonen@iki.fi> - 2017-06-14 12:50 +0200

#58005 — Bug#864604: usb-modeswitch: USB 3G modem is detected twice as "USB Mass Storage"

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Josua Dietze [2017-06-11 16:31:16+02] wrote:

> Bottom line:
> The product ID 0x9801 needs to be added to the serial driver of the kernel.
>
> For a quick fix you can do what usb_modeswitch did previously:
> # modprobe -v option
> # echo "1c9e 9801" > /sys/bus/usb-serial/drivers/option1/new_id
>
> You can put this into a script and let it be called by udev
> automatically if your modem is plugged. Put this below the first
> "ACTION" line in /lib/udev/rules.d/40-usb_modeswitch.rules:
>
> ATTR{idVendor}=="1c9e", ATTR{idProduct}=="9801", RUN+="/path/to/your/script"

Thank you very much. I did your suggested quick fix and got my device
working again. I'll try to help others and report the vendor and product
ids to kernel's USB serial subsystem maintainers.

So it's not really usb-modeswitch package's bug but the removed feature
of not loading kernel modules "manually" triggers the underlying
problem. Maybe this bug can be closed.

Thanks!

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#58028 — Bug#864604: Telewell TW-3G HSPA+ modem not detected (was: Bug#864604: usb-modeswitch: USB 3G modem is detected twice as "USB Mass Storage")

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Teemu Likonen [2017-06-11 19:34:02+03] wrote:

> Josua Dietze [2017-06-11 16:31:16+02] wrote:
>> Bottom line:
>> The product ID 0x9801 needs to be added to the serial driver of the kernel.

> I'll try to help others and report the vendor and product ids to
> kernel's USB serial subsystem maintainers.

More news. I reported the issue to kernel's usb-serial maintainers and
they fixed it quickly. It's now fixed in usb-serial git tree. My believe
is that it'll go to kernel's stable branch (4.9) and then to the
mainline kernel.

Here's the commit:

https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git/commit/?h=usb-linus&id=8fb060da715ad10fe956d7c0077b2fb0c12bb9d7

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