Canon 600D turns off preview after 20-30 minutes

[Jaxstyle]

Hello guys!

I have a canon 600D i'm using for my twitch streaming. The camera is connected through HDMI, and using an Avermedia capture card Extreme.

The problem is after around 20-30 minutes the camera turns off. I don't know if its a option that closes it, or if its the heat the camera makes. The camera isn't recording, only preview.
Right now i'm using a battery, and i'm going to use AC Adapter for long sessions. Maybe that could be the problem?

Is there any features i should uncheck in Magic Lantern that could cause this problem?

[Walter Schulz]

http://wiki.magiclantern.fm/userguide#misc_key_settings -> Sticky HalfShutter