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. -- Aleksander https://aleksander.es _______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
