I have Ubuntu 12.04 installed on my Lenovo ThinkPad X200 Tablet. It restarts occasionally all of a sudden. I have taken it to a Lenovo service centre. They seem to have found no hardware faults. I did a memtest for RAM overnight and it came out perfect. I need to find out what is causing these restarts. How do I do that?
The restarts really are truly random. I am working solely on AC power. I have removed the battery. This has significantly reduced the restarts, but it still happens. I also considered if it is because the computer is overheating. That was ruled out because sometimes this happens just after it boots up.
The restarts are not bothersome enough to buy a new laptop nor are they too occasional to not consider it.