Hi,
I just updated the modemmanager, but this not solve the issue:
After power on
root@angelo-thinkpad-x1-carbon-4th:~# systemctl status ModemManager.service
● ModemManager.service - Modem Manager
Loaded: loaded (/lib/systemd/system/ModemManager.service; enabled;
vendor preset: enabled)
Active: active (running) since Tue 2019-12-10 11:29:49 CET; 4min 2s ago
Main PID: 1000 (ModemManager)
Tasks: 5 (limit: 4915)
CGroup: /system.slice/ModemManager.service
├─1000 /usr/sbin/ModemManager --filter-policy=strict
└─1387 /usr/lib/libmbim/mbim-proxy
dic 10 11:29:55 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<warn> couldn't load initial EPS bearer settings: 'NoDeviceSupport'
dic 10 11:29:55 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<warn> Couldn't open ports during Modem SIM hot swap enabling: Couldn't
get primary port
dic 10 11:29:55 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem: state changed (unknown -> disabled)
dic 10 11:29:55 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed
(disabled -> enabling)
dic 10 11:29:55 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<warn> Failure
dic 10 11:29:55 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration
state changed (unknown -> searching)
dic 10 11:29:56 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed
(enabling -> searching)
dic 10 11:29:56 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration
state changed (searching -> registering)
dic 10 11:29:56 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration
state changed (registering -> home)
dic 10 11:29:56 angelo-thinkpad-x1-carbon-4th ModemManager[1000]:
<info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed
(searching -> registered)
root@angelo-thinkpad-x1-carbon-4th:~# mmcli -L
/org/freedesktop/ModemManager1/Modem/0 [Sierra Wireless,
Incorporated] Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A
root@angelo-thinkpad-x1-carbon-4th:~#
After sleep (i.e. the lid closed)
root@angelo-thinkpad-x1-carbon-4th:~# mmcli -L
No modems were found
root@angelo-thinkpad-x1-carbon-4th:~# systemctl status ModemManager.service
● ModemManager.service - Modem Manager
Loaded: loaded (/lib/systemd/system/ModemManager.service; enabled;
vendor preset: enabled)
Active: active (running) since Tue 2019-12-10 11:07:59 CET; 17min ago
Main PID: 1035 (ModemManager)
Tasks: 3 (limit: 4915)
CGroup: /system.slice/ModemManager.service
└─1035 /usr/sbin/ModemManager --filter-policy=strict
dic 10 11:15:07 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0xf aborted, but message is not abortable
dic 10 11:15:08 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0x10 aborted, but message is not abortable
dic 10 11:15:09 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0x11 aborted, but message is not abortable
dic 10 11:15:10 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0x12 aborted, but message is not abortable
dic 10 11:15:11 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0x13 aborted, but message is not abortable
dic 10 11:15:12 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0x14 aborted, but message is not abortable
dic 10 11:15:13 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
transaction 0x15 aborted, but message is not abortable
dic 10 11:15:13 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
<info> [device /sys/devices/pci0000:00/0000:00:14.0/usb1/1-2] creating
modem with plugin 'Sierra' and '2' ports
dic 10 11:15:13 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
<warn> Could not grab port (usbmisc/cdc-wdm0): 'Cannot add port
'usbmisc/cdc-wdm0', unsupported'
dic 10 11:15:13 angelo-thinkpad-x1-carbon-4th ModemManager[1035]:
<warn> Couldn't create modem for device
'/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2': Failed to find primary
AT port
root@angelo-thinkpad-x1-carbon-4th:~#
Il 10/12/19 10:06, Aleksander Morgado ha scritto:
Hey,
I'm using Ubuntu 18.04.3 lts on a Lenovo Thinkpad X1 carbon i7-6600 with modem
LTE Sierra ID_MODEL=Sierra_Wireless_EM7455_Qualcomm_Snapdragon_X7_LTE-A.
When the laptop is power up I can use the modem, but when the laptop went to
sleep and after I resume it, the modem disappear.
Now the laptop is resumed and the modem is not available to ModemManager 'cause
this error:
root@angelo-thinkpad-x1-carbon-4th:~# systemctl status ModemManager
● ModemManager.service - Modem Manager
Loaded: loaded (/lib/systemd/system/ModemManager.service; enabled; vendor
preset: enabled)
Active: inactive (dead) since Sat 2019-12-07 16:52:35 CET; 30min ago
Process: 13379 ExecStart=/usr/sbin/ModemManager --filter-policy=strict
(code=exited, status=0/SUCCESS)
Main PID: 13379 (code=exited, status=0/SUCCESS)
dic 07 16:52:35 angelo-thinkpad-x1-carbon-4th systemd[1]: Starting Modem
Manager...
dic 07 16:52:35 angelo-thinkpad-x1-carbon-4th ModemManager[13379]: <info>
ModemManager (version 1.10.0) starting in system bus...
dic 07 16:52:35 angelo-thinkpad-x1-carbon-4th ModemManager[13379]: <warn>
Could not acquire the 'org.freedesktop.ModemManager1' service name
dic 07 16:52:35 angelo-thinkpad-x1-carbon-4th ModemManager[13379]: <info>
ModemManager is shut down
dic 07 16:52:35 angelo-thinkpad-x1-carbon-4th systemd[1]: Started Modem Manager.
That error above is weird, were you running ModemManager manually
yourself at some point? It doesn't make sense that the systemd started
service ends up failing like that unless there was another
ModemManager process around.
The issue with not being available after suspend may be a timing
issue, I would definitely try with a newer ModemManager version (e.g.
1.12) if possible. I maintain a PPA for Ubuntu 18.04 here, but I
didn't upgrade the MM there to 1.12 yet. Anyway, that PPA also
contains newer libqmi/libmbim, so I would definitely try using that
PPA and see what happens:
https://launchpad.net/~aleksander-m/+archive/ubuntu/modemmanager-bionic
Will try to upgrade MM in the PPA soon, but cannot promise.
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