Modem device not there after wakeup

[maricn]

I set it up per README.md, and I can see the modem and use it for internet and also SMS messages. However that works only since the boot until the first sleep. After that, the device is not there anymore.

I'm sorry if this is not a problem with your module, but I thought it's the best place to ask.

I'm on Thinkpad x1c7 (X1 Carbon 7th Gen).

$ uname -a
Linux work-x1c-mx19 5.6.0-18.1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 5.6-20.1~buster (2020-06-10) x86_64 GNU/Linux

$ sudo lsmod | grep xmm
xmm7360_usb            16384  0

$ sudo lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 06cb:00bd Synaptics, Inc.
Bus 001 Device 002: ID 04f2:b67c Chicony Electronics Co., Ltd
Bus 001 Device 004: ID 8087:0aaa Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

$ sudo lspci -nnvd 8086:7360


$ sudo mmcli -m 0
error: couldn't find modem at '/org/freedesktop/ModemManager1/Modem/0'

$ sudo mmcli -L
No modems were found

$ sudo mmcli -S
error: couldn't request to scan devices: 'GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquark.Code19: Operation was cancelled'

dmesg.log

Also, lshw doesn't seem to have anything relevant, and /dev/ttyACM* are gone.

Thanks for any help!