Bristol Digest, Vol 545, Issue 3

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Today's Topics:

1. Re: Bristol Digest, Vol 544, Issue 3 (James Womack)


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Message: 1
Date: Tue, 08 Apr 2014 13:42:49 +0100
From: James Womack <5inowsy1maiq@gmail.com>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Bristol Digest, Vol 544, Issue 3
Message-ID: <5343EEC9.4070905@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

On 08/04/14 12:33, Matt Dainty wrote:
> * Alex Butcher <lug@assursys.co.uk> [2014-04-08 07:25:36]:
>> On Tue, 8 Apr 2014, Ron Young wrote:
>>
>>> Hi James,
>>> I am a IT field service engineer with over 40 years experience, contracting
>>> around Europe and UK, and I believe that your problem may well be a dodgy
>>> graphic card however, have you tried removing EVERYTHING from the
>>> Motherboard, as if you were going to replace it? IF you remove one
>>> connector/component at a time, being carfull to reconnect it before you
>>> move
>>> on to the next item, I have had many instants were dody connections were
>>> the
>>> problem, just pull it and reinsert it again PSU to motherboard USB,LAN,
>>> Graphics EVERYTHING! I believe that the connections get "tired" after a
>>> while and I have been sent out on calls to " Replace the Faulty
>>> Motherboard"
>>> only to find that by just pulling everythind connected to the Motherboard
>>> and reinserting it, cured the problem.
>> Yeah, "remove and reseat" is quite a common diagnostic technique. I've seen
>> PCI cards that wobble in their slots and cause hangs, or graphics cards that
>> lose the connection with one side of the edge connector when the backplate
>> screw is tightened if the card is not held central whilst doing so (and this
>> is on good quality parts too; Antec cases, Asus/Gigabyte motherboards).
>>
>> And then there's a special place for SATA connectors which have a tendency
>> to become intermittent if you breathe on them and are sometimes specified
>> only to 50 insertion/removal cycles.
> Not sure if this has been suggested, but have you tried a different PSU?
>
> I ended up replacing the PSU at least once on the last two machines I
> built from parts. Not to say I built them badly; the machines were in
> continuous use for years at a time between replacement PSU's, but I
> remember they generated the same hard-to-diagnose problems that
> disappeared completely when I swapped the PSU on a hunch.
>
> One PSU failure manifested itself as a random lockup, and then when the
> machine rebooted, the kernel would spin up the hard disks and the extra
> load from that would trip the failing PSU again and the machine would
> power cycle once more, rinse and repeat.
>
> Matt
>
> _______________________________________________
> Bristol mailing list
> Bristol@mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bristol
Hi,

Thanks for all the suggestions. I eventually gave up and replaced with a
different machine because the problem was taking so long to solve, and I
needed the machine to be stable and perform some important functions
(backup of multiple other machines, hosting code).

Regards,
James



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