Error reading from istream: Error reading from file descriptor: No such device

[Nicolas RENAULT]

Hi,

I have a problem :

* Debian stretch  / kernel 4.9.0.12
* Sierra Wireless, Incorporated  MC7304
* libqmi 1.22.6

when launching connections :

Loading profile at /etc/qmi-network.conf...
    APN: free
    APN user: free
    APN password: free
    qmi-proxy: no
Checking data format with 'qmicli -d /dev/cdc-wdm1 --wda-get-data-format '...
[06 Mar 2020, 07:53:15] -Warning ** [/dev/cdc-wdm1] requested auto mode but no MBIM QMUX support available
Device link layer protocol retrieved: 802-3
Getting expected data format with 'qmicli -d /dev/cdc-wdm1 --get-expected-data-format'...
[06 Mar 2020, 07:53:15] -Warning ** [/dev/cdc-wdm1] requested auto mode but no MBIM QMUX support available
Expected link layer protocol retrieved: 802-3
Device and kernel link layer protocol match: 802-3
Starting network with 'qmicli -d /dev/cdc-wdm1 --wds-start-network=apn='free',username='free',password='free',ip-type=4  --client-no-release-cid '...
[06 Mar 2020, 07:53:15] -Warning ** [/dev/cdc-wdm1] requested auto mode but no MBIM QMUX support available
[06 Mar 2020, 07:53:22] -Warning ** Error reading from istream: Error reading from file descriptor: No such device
error: operation failed: operation failed and couldn't be aborted: Cannot write message: Error writing to file descriptor: No such device
Saving state at /tmp/qmi-network-state-cdc-wdm1... (CID: 9)
error: network start failed, no packet data handle
[06 Mar 2020, 07:54:00] -Warning ** [/dev/cdc-wdm1] requested auto mode but no MBIM QMUX support available
error: couldn't release client: QMI protocol error (3): 'Internal'
Clearing state at /tmp/qmi-network-state-cdc-wdm1...


I deploy libqmi on lot of the same hardware but got problem on the two last installation.
I think the main events is "Error reading from istream: Error reading from file descriptor: No such device"

Do I have the take care of "Warning ** [/dev/cdc-wdm1] requested auto mode but no MBIM QMUX support available".

what i try so far :

* use backport kernel : 4.19.0-0.bpo.6-amd64  => same things.
* use libqmi 1.24.6 (download , configure , install ) => same things

Do you have any idea ?

if you need more information i can provided it.

Regards,

Nicolas

(sorry for bad english)
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