I noticed that when I plug in some power-hungry USB devices—like an external hard drive or an RTL-SDR dongle—into the left USB port, the DevTerm’s keyboard and mouse stop working. Rebooting doesn’t help at all. I couldn’t find a solid fix in the community, and I used to open up the whole device and reseat the keyboard just to get it working again.
But today I found an easier trick: just take out the battery, put it back in, and power on. That brought the keyboard back to life.
By the way, has anyone figured out a real fix for the keyboard freezing when plugging in USB devices?