Published at LXer:
I recently had a fun experience. My Mageia 1 Linux system seemed to be experiencing hard lockups requiring a push of the reset button to “resolve”. By “hard”, I mean no keyboard input, no program updates showing in X and sometimes no ping response from another PC on the LAN. I had run some updates, including a new kernel update, and these lockups appeared after running the updates. Cause and effect. Yes? Well, no. It turned out I was having a hardware problem. Here is how I figured that out.
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