I'm currently unable to access X. I removed LightDM to switch to Gnome temporarily, then uninstalled gdm but didn't reinstall slick-greeter, and now I can't get online. nm-online times out after 30 seconds. nmcli connection show shows Wired Connection 1, but DEVICE is empty (--). nmcli device show shows the ethernet (enp4s0) and loopback, but the ethernet's general.state is "30 (disconnected)" and general.connection and con-path are empty (--). (wired-properties.carrier is on.)
I thought it might have had to do with this other issue I've had: https://dev.solus-project.com/T4108
However, after using nmcli to delete the VPN config, there's no difference, besides it being gone from the connection list.