I am dual booting ubuntu 20.04 desktop on my mid 2012 macbook pro. I'd like to run it as headless server with the lid closed. To try to do this I set systemctl default to multi-user, disabled gdm, and set grub to boot into single user mode. Everything is working fine (~2% CPU) when I have an external monitor plugged in but as soon as I unplug the external monitor cpu usage spikes (~40%), and systemd_logind starts running reportedly using ~80% cpu. When I plug the external monitor back in systemd_logind stops using a bunch of cpu and the system goes back to around 2% cpu.
Any suggestions would be greatly appreciated.
PS: I tried to install ubuntu server originally, but it wouldn't let me do the partitioning the way I needed to dual boot, so i had to use desktop to install.
