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・)