I also have the same issue. By killing fwupd I was able to temporarily stop the CPU usage. Manually restarting does not cause CPU usage to spike up again. Attached is the output of fwupd after manually restarting with,
> sudo /usr/lib/x86_64-linux-gnu/fwupd/fwupd -v Here's my system info, > sudo dmidecode | grep 'System Information' --after-context=10 System Information Manufacturer: LENOVO Product Name: ______ Version: ThinkPad X1 Carbon 5th Serial Number: ___________ UUID: ___________ Wake-up Type: Power Switch SKU Number: LENOVO_MT_20HR_BU_Think_FM_ThinkPad X1 Carbon 5th Family: ThinkPad X1 Carbon 5th ** Attachment added: "fwupd.log" https://bugs.launchpad.net/ubuntu/+source/appstream-glib/+bug/1707110/+attachment/4959438/+files/fwupd.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1707110 Title: fwupd is consuming 100% of CPU in an upto date Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/appstream-glib/+bug/1707110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs