Troubleshooting the Raspberry Pi
When Sean first started using his Raspberry Pi, he couldn’t connect to the Internet in the desktop environment, although it was working fine in the Linux command line. The problem, it turned out, was an incompatible keyboard. That’s something he never would normally have suspected from the symptom he was seeing. For that reason, we recommend you work your way through this entire 12-point checklist, whatever the problem is and however unlikely it might seem that the these steps will fix things. Humor us, and you might be pleasantly surprised!
These steps are listed in a rough order of priority, with the quickest tests and simplest solutions first. You can try any of these solutions at any time, but if you respect this order (more or less), you can minimize any expense and hassle.
1. Be patient.
When your Raspberry Pi is busy, it can appear to be unresponsive, so you might think it’s crashed. Often, if you wait, it recovers when it finishes its tasks. If it’s not doing anything you particularly care about, you can always just restart the machine, but that loses any data in memory and it’s not a good idea to reset during operations like software installations (if you can avoid it) because it leaves them half-finished. Note that the Raspberry Pi has a screensaver built in, so you can recover the Pi from a blank screen by wiggling the mouse (when in the desktop environment) or pressing any key (in the command line). You can use the Shift key, so that ...