Same issue for me as well. Staring KDE used to take a few seconds, now it's 30. systemd-analyze critical-chain gives the following:
graphical.target @7.949s └─multi-user.target @7.948s └─apache2.service @6.821s +1.127s └─network-online.target @6.810s └─NetworkManager-wait-online.service @965ms +5.845s └─NetworkManager.service @822ms +126ms └─dbus.service @793ms └─basic.target @769ms └─sockets.target @769ms └─snapd.socket @761ms +909us └─sysinit.target @757ms └─apparmor.service @699ms +57ms └─local-fs.target @697ms └─run-user-118.mount @1.507s └─local-fs-pre.target @309ms └─systemd-remount-fs.service @288ms +16ms └─system.slice @170ms └─-.slice @168ms Kubuntu 16.04 (64-bit) KDE Plasma 5.5.5 Qt 5.5.1 Kernel: 4.4.0-28-generic Hardware: Lenovo Thinkpad E560, with HD panel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1584604 Title: Slow login to kde5 waiting on ?networkmanager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plasma-nm/+bug/1584604/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs