I'm running an RPi2 in kiosk mode (the mirror project). It's working fine now except that after about 15 minutes it stops updating weather, time, and messages and eventually freezes up completely. If I leave it run for awhile (hours) after freezing, I get Chrome's "Oh Snap" error page. The only thing I can do is reboot...but I'm not about to reboot every 15 mins.
Given that it happens at 15 minutes every time, it makes me wonder if the wifi dongle or something else goes into a power save mode, or if something on the Pi gets overloaded at that time. If I reboot, everything works fine again until 15 minutes is up.
Any idea what would be causing it?