Re: sierra modem connected through serial port not working

[Dan Williams <dcbw redhat com>]

On Mon, 2018-11-05 at 21:11 -0600, linux.challenge1 via networkmanager-
list wrote:
> We are using Modem manager 1.8.2. We are trying to connect sierra
> modem via
> serial port ttyS0. We modified /lib/udev/rules.d/77-mm-sierra.rules
> to

Are you really using ttyS0?  That's usually an onboard RS232 serial
port, while most devices these days tend to be USB-based.

But perhaps you have one of the IoT/embedded devices and you're using
the UART connection?

Can you share which specific Sierra device this is?

Dan

> ACTION!="add|change|move|bind", GOTO="mm_sierra_end"
> SUBSYSTEMS=="tty", GOTO="mm_sierra"
> GOTO="mm_sierra_end" 
>
> LABEL="mm_sierra"
>
> ACTION=="add", KERNEL=="ttyS0", ENV{ID_MM_PLATFORM_DRIVER_PROBE}="1"
>
> LABEL="mm_sierra_end"
>
> But when we load we get following logs
>
> syslog[4989]: <debug> [1541472622.239884] (Sierra) [ttyS0] filtered
> as
> couldn't retrieve drivers
> syslog[4989]: <debug> [1541472622.240072] [plugin manager] task
> 0,ttyS0:
> found '0' plugins to try
> syslog[4989]: <debug> [1541472622.240265] [plugin manager) task
> 0,ttyS0:
> started
> syslog[4989]: <debug> [1541472622.240424] [plugin manager] task
> 0,ttyS0:
> finished in '1.498676' seconds
> syslog[4989]: <debug> [1541472622.240912] [plugin manager] task
> 0,ttyS0: not
> supported by any plugin
>
> and sierra plugin is not loaded. Any help?
>
>
>
> --
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