This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1826461 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1826461 Title: Suspend fails on Ubuntu 18.04 when mobile network connected and no WiFi connection. Status in linux package in Ubuntu: Incomplete Bug description: Suspend fails on Ubuntu 18.04 when mobile network connected and no WiFi connection. Ubuntu 18.04, Thinkpad X240, Sierra modem Reproduced on 4.15 and 4.18 kernel. The bug is triggered only when there is no WiFi connection. After waking laptop from suspend ModemManager stops working and after that I cannot suspend anymore. When it happens mmcli -L gives: Found 1 modems: /org/freedesktop/ModemManager1/Modem/9 [Sierra] MBIM [1199:A001] And mmcli -m 9: Status | lock: 'none' | unlock retries: 'sim-pin (3)' | state: 'registered' | power state: 'on' | access tech: 'gprs, lte' | signal quality: '0' (cached) After a few attempts to restart ModemManager and suspend it starts working. But only for one suspend. After one suspend I need to do the whole procedure again. Similar to: https://askubuntu.com/questions/1084698/ubuntu-18-04-em7455-works-only-after-suspend https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1774950?comments=all https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1801743 On Ubuntu 16.04 suspend and ModemManager used to work flawlessly. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1826461/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp