[Telit LE910-EU1] mbimcli -disconnect error

[Carlo Lobrano]

> I cannot find this thread in the mailinglist

nevermind, I was checking the modemmanager's one

On Fri, 4 Aug 2017 at 15:43 Carlo Lobrano <c.lobrano at gmail.com> wrote:

> Hi Aleksander,
>
> I used LE910 in mbim mode for some time (even if not recently), but I
> don't remember such problem, I need to check it again.
> I cannot find this thread in the mailinglist, so I don't have all the
> info, what's the use case? What happens before the disconnection? (kernel
> version?)
>
> On Fri, 4 Aug 2017 at 15:30 Aleksander Morgado <aleksander at aleksander.es>
> wrote:
>
>> Hey Matthias, Carlo & Daniele,
>>
>> On 04/08/17 13:40, Matthias Mielke wrote:
>> > usb 1-2: USB disconnect, device number 31
>> > cdc_mbim 1-2:1.12: Unexpected error -71
>> > cdc_mbim 1-2:1.12 wwan0: unregister 'cdc_mbim' usb-700000.ehci-2, CDC
>> MBIM
>> > usb 1-2: new high-speed USB device number 32 using atmel-ehci
>> > usb 1-2: USB disconnect, device number 32
>> > usb 1-2: new high-speed USB device number 33 using atmel-ehci
>> > cdc_mbim 1-2:1.12: setting rx_max = 16384
>> > cdc_mbim 1-2:1.12: cdc-wdm0: USB WDM device
>> > cdc_mbim 1-2:1.12 wwan0: register 'cdc_mbim' at usb-700000.ehci-2, CDC
>> MBIM,
>> > 72:a6:7a:22:88:b7
>> >
>> >
>> >
>> >
>> >
>> > The errors above seem to occur in around 50% of the cases I use the
>> > --disconnect  command, the other 50% are working fine and the modem gets
>> > disconnected from the network successfully.
>> >
>> >
>> >
>> > Still, after successful disconnect, the modem is also disconnecting
>> from the
>> > USB.
>> > Can someone of you kind people assist me with my problem?
>>
>> I believe I'm going to blame this on buggy firmware. When you get the
>> "unexpected port hangup" it means the modem went away from the USB
>> subsystem, it power-cycles itself.
>>
>> Carlo, Daniele, have you seen any such thing with a Telit LE910 in MBIM
>> mode?
>>
>> --
>> Aleksander
>> https://aleksander.es
>>
>
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