You could also test running prime95 in stress test mode to try to see if
there's a hardware failure, it will compute mersenne primes and compare with
a table of known-good values. Flaky hardware will either lock up the
computer or report as a computational error. Do note that it really will
strain your hardware, primarily the cpu, memory controller and ram. Usually
a 24 hour run is long enough to show any hardware issues.
http://www.mersenne.org/freesoft.htm
On Tue, Jun 24, 2008 at 1:51 AM, Andrew Ayre <[EMAIL PROTECTED]> wrote:
> Thanks Chris and Jon,
>
> Because I've rebooted the PC twice since the problem, I no longer have
> an Xorg log file for when the problem happened. So I'll wait until it
> shows up again and then take a look.
>
> I didn't touch the keyboard - I was watching the CNC machine when it
> happened the first time, then I let EMC2 run some g-code over and over
> again (no machine attached) and while I was out on errands it happened
> again.
>
> Running memtest86+ now.
>
> Andy
>
> Jon Elson wrote:
> > Andrew Ayre wrote:
> >> I have noticed that perhaps one time in five Linux will partially
> >> shutdown during milling. It's a bit hard to describe but the Gnome
> >> desktop is replaced with a text screen of what looks like the tail end
> >> of the bootup sequence:
> >>
> >> Operation [OK]
> >> Another operation [OK]
> >> Running startup scripts in /etc/rc.local [OK]
> >>
> >> There are no messages and EMC2 continues to generate pulses - which
> >> cause the X and Y axis to move the spindle in a straight line. A quick
> >> press of the power button turns off the power.
> >>
> >> I booted and checked dmesg, user.log, syslog and messages. Nothing was
> >> recorded to indicate a problem. The syslog only had the 30 minute marks
> >> in it.
> > This may be a crash of the X-windows server. You didn't, by any
> > chance, hit Ctrl-Alt-Backspace? That is the command to kill the
> > X server. If X is actually crashing, the message file is in
> > /var/log/XFree86.0.log and may show some useful info.
> >
> > Jon
>
> --
> Andy
> PGP Key ID: 0xDC1B5864
>
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