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Re: Power cycling and xserver

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Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> writes:

> Hello,
>
> Haines Brown a écrit :
  
>> What connection could there be between the faulty operation of the X
>> server and errative power?
>
> IMO, an aging power supply. Or aging electrolytic capacitors on the
> motherboard.

I don't see any expanded electrolytes, but never been comfortable that
it is a reliable indicator. The PS is high quality: Enermax Liberty, 400W.
>
>> The hardware is from 2008, Could it be that
>> the BIOS battery needs replacement? The HD is being supplied with 5 and
>> 11 volts in its power connector. 
>
> 11 V for the 12 V output is below the ATX specification minimum ; it
> should be at least 11.4 V.

Unfortunately, my "11" was really a bit over 11.0, but I don't remember
how much, for I just was checking to see if voltage was there. It may
have been near 11.4. But when I now measure it, it is 11.98. I will do
some more voltage checks. If they turn out to be OK, and the boot
process does not begin, the problem may be the MB. The CPU fan is
working, incidentally.

Other volages seem ok: 

      standby voltage  5.19
      latching circuit 4.06 when machine off and 0.25 when machine on
      grey wire (rail level) goes from 0 to 4.4
      orange           3.34
      red              5.11
      yellow          11.98

Possibly the one time when I did manage to loggin in and start the X
server, the power supply barely managed to support its requirements and
after a few hours gave up and the server no longer worked.

Right now the power LED is cycling off and on every few seconds, and now
it seem to have settled and is permently on.

Haines

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Thread

Power cycling and xserver Haines Brown <haines@histomat.net> - 2014-08-15 08:35 -0400
  Re: Power cycling and xserver Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2014-08-15 15:00 +0200
    Re: Power cycling and xserver Haines Brown <haines@histomat.net> - 2014-08-15 11:10 -0400

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