Re: [PLUG] How to diagnose a lockup?

Ctrl-Alt-F1 doesn't get me back to terminal, but I didn't try killing
the Xserver.

If you can get to the machine via SSH then you'll be able to debug it further by checking out the X logs. Else, if the machine is completely frozen, make sure this isn't some ACPI problem. Set noacpi at boot if you have too.

I guess I thought someone could tell me something like "reboot, look at
these logs in this order, etc." Or "reboot and use tool x to get a dump
of y," or just outline a general strategy for diagnosing the issue, or
finding out what the machine was doing right before the lockup, etc.

If anything, check /var/log/messages for any kind of problems not related to X. But if nothing is in there, make sure you don't have a known problem with ACPI and your hardware.

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