The sleep/wake button on my Triumph suddenly stopped working. It was working fine earlier today. But when I took the phone out of my backpack after school, I couldn't get it to wake up. I figured it had frozen for some reason so I pulled the battery. After putting the battery back in, it turned on almost immediately, which I'm pretty sure it never did before. After it booted up, I couldn't get it to sleep. I then realized the button was not working. I tried enabling "Volume rocker wake" in the CyanogenMod input settings, but it seems to work some of the time. So I have no way of waking it or locking it, which makes the phone kind of useless. It's a shame because the phone works fine otherwise. I am running MTDEV-CM7 build 2013-03-03.