This isn't a problem with systemd, it looks like this is a problem either with your kernel drivers and/or actual hardware, e.g.:
[ 1135.331004] amdgpu 0000:02:00.0: refused to change power state from D0 to D3hot [ 1135.331007] xhci_hcd 0000:02:00.4: refused to change power state from D0 to D3hot ** Package changed: systemd (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898421 Title: Suspend - takes 30 seconds to fully suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1898421/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
