Comment 13 for bug 495768

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Russell Wing (wingfamily) wrote :

I've done some more testing and it seems to be the RAM related. I had 2 x 2GB sticks (DDR 2 800, PC 6400) installed in ganged mode. Removing the stick closest to the front of the machine makes the machine stable again- it's runs happily at full load for extended periods and continuously for 2 days now.

I am not sure if one of the memory sticks is at fault, they both seem to work and pass Memtest, but only when one is installed. So that leaves the motherboard or software I guess?

What's strange is that the machine had worked fine for 7-8 months and become less stable over the last 4 months.

I've found a reports of similar issues with SN78SH7 shuttles.
http://www.sudhian.com/index.php?/forums/viewthread/105923/
Interestingly I also have a QUAD core AMD Phenom X4 940 processor which is referenced in one the postings in the thread above.

So at the moment my best guess is a hardware issue... not sure whether it is worth the effort to buy more RAM to test with as I am more suspicious of the motherboard or memory socket and the machine is out of warranty.....

Is there any way that it could be related to the Kernel and the way the memory controller on the AMD processor is working???