I have the same problem on my Lenovo T480s with Xubuntu 19.04. Disabling Bluetooth helps as a workaraound. I also tried the mainline kernel 5.3.2 with the exact same result.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1823076 Title: System wakes up immediately after suspend if Bluetooth is still enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1823076/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs