ssh + sudo + X
普通にやると
$ ssh -Y hogehoge $ sudo virt-manager X11 connection rejected because of wrong authentication. The application 'virt-manager.py' lost its connection to the display localhost:11.0; most likely the X server was shut down or you killed/destroyed the application.
怒られますが
$ sudo XAUTHORITY=~/.Xauthority virt-manager
で出来ました(・ω・)