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Old 04-14-2009, 08:01 AM   #1
argon99
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Strange problem with 12.2


Hello all

I have 12.2 installed and have been doing some things with the init scripts. (Note: everything is in it's own "sandbox" so the system is unaffected)

If I leave the system on all night when I come back to it in the morning the network is down, eth0. Then I try to do anything and the system locks up, it's KDE 3.5. This looks like a memory leak to me. Has anybody else seen this kind of behavior? If so what did you find and how did you fix it?

TIA
Joe
 
Old 04-17-2009, 12:40 PM   #2
dywanik
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I remember having more less similar problem with USB modem (it would disconnect after some time) and a no-name main board. I had to switch to a different mobo and everything was working fine after that.
 
Old 04-18-2009, 12:27 AM   #3
dchmelik
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If you use dhcpcd and are modifying rc.inet1, then you probably should add '-R' to dhcpcd so it does not overwrite /etc/resolv.conf, but I doubt anything in rc.inet1 can normally halt the system... that sounds like something from a different script.
 
Old 04-22-2009, 01:07 AM   #4
argon99
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Well I found the problem. I ran memtest and came up with a few errors. I the began the process of pulling one stick at a time ( it has 4 gigs in it) and tried to run memtest again. Now it won't boot, beep or anything else. I have learned, if the info I read was correct, that the memory controller is internal to the amd athlon x2 939 socket cpu. If that is true I have no way of telling if the problem is in the cpu or in the mother board. Because of that I just can't buy another Mb and swap all my stuff into it.

What a major pain... Now it's new mother board and cpu time. And because the system I was using is two years old the memory is obsolete also. Well at least I can still spot a memory problem, even if it wasn't a leak.
 
Old 04-22-2009, 07:20 AM   #5
onebuck
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Hi,

Which motherboard? Is your memory dual channel?

You could clean the memory stick edges.

You should first use good ground techniques, either with a grounding wrist strip or at least placing yourself at the the same potential level as the system by maintaining contact with the equipment.

I would shut the power off to the system and unplug the system. Clean the card edge for the memory using strips of new clean 20# paper with denatured alcohol. Swipe in one direction with folded wet paper for the edge, a new piece for each swipe. You can use a credit card to clean the connector if that is needed by folding the paper over the end of the credit card. But first you should use dry air to blow the connector out. In the USA it can be purchased at most computer/office supply houses, even Walmart has it. Then replace the card without touching the card edge.

BTW, don't use a eraser to clean/buffer the card edge. You are doing more harm then good.

I would then run 'memtest86' for a number of passes, possibly over night. If you get errors then you have a problem. Replace the bad stick. If the memory is used with bad data/address problems then you will getting nothing but nightmares!

I would not rely on the memory test performed by the 'POST'. 'memtest86' performs several pattern tests that will exercise the cells. There are better test but 'memtest has become a standard plus it's free.
 
Old 04-23-2009, 04:05 AM   #6
argon99
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Quote:
Originally Posted by onebuck View Post
Hi,

Which motherboard? Is your memory dual channel?

You could clean the memory stick edges.

You should first use good ground techniques, either with a grounding wrist strip or at least placing yourself at the the same potential level as the system by maintaining contact with the equipment.

I would shut the power off to the system and unplug the system. Clean the card edge for the memory using strips of new clean 20# paper with denatured alcohol. Swipe in one direction with folded wet paper for the edge, a new piece for each swipe. You can use a credit card to clean the connector if that is needed by folding the paper over the end of the credit card. But first you should use dry air to blow the connector out. In the USA it can be purchased at most computer/office supply houses, even Walmart has it. Then replace the card without touching the card edge.

BTW, don't use a eraser to clean/buffer the card edge. You are doing more harm then good.

I would then run 'memtest86' for a number of passes, possibly over night. If you get errors then you have a problem. Replace the bad stick. If the memory is used with bad data/address problems then you will getting nothing but nightmares!

I would not rely on the memory test performed by the 'POST'. 'memtest86' performs several pattern tests that will exercise the cells. There are better test but 'memtest has become a standard plus it's free.
Oh it gets worse. I pulled one stick. (The manual is good at showing how the sticks should be instaled if using less then four.) And guess what it wouldn't boot, beep or anything. I then did some research and found that the memory controller is in the cpu. So I'm basically F___ed. I have no way to tell if the problem is in the cpu or in the mother board. The MB is a machspeed that came with a lifetime warranty. Yea right. It seems nobody is getting machspeed to honor the warranty.

I have been going over newegg and tiger direct looking for a good mb combo. I think the next one will be a quad core. Don't ask me why maybe for the same reasons people climb mountains, Because they are there.
 
  


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