How can I reset the WindowManager resolution and DPI settings in the Google TV user selection screen?

I was experimenting with the wm size and wm density commands, and now the Google TV user selection screen does not let me pick a user, telling me that 1920x1080 is not a supported resolution when I do so. Strangely, the resolution is not actually the problem, but rather the DPI, which is halved. Resetting the DPI with wm density reset allows me to select a user, but this must be done after every reboot. How can I reset these broken settings?