Hi All,
Perhaps try the commonsense idea first. Were the RAM slots free from
dust before you removed them? If not, dust particles will be forced onto
the contacts when you insert the new modules.
Cheers,
Peter
On 18/02/2016 10:38, Volker Kuhlmann wrote:
On Thu 18 Feb 2016 02:29:32 NZDT +1300, Kent Fredric wrote:
Did you try swapping the order of your ram cards? That can alleviate
certain kinds of "Loaded into fixed address that happened to be
broken" problems.
And see if you can borrow some friends ram of the same size and try it
independently.
Awkward!! Don't borrow RAM, only swap around what you have. Memory
faults can be awkward to find, especially when they're sporadic.
In my case Linux would just panic every few weeks. More often over
course of 18 months. Memtest86 never ever found anything wrong with any
of the 4 4GB modules. Swapping them around or removing 2 of 4 in any
combination made no difference. Then I tried memtester
http://pyropus.ca/software/memtester/ because it runs in user-space and
it's possible to keep working. Some memory module combinations made the
kernel crash(!), which should never happen with this kind of test. The
crashes were more immediate with a certain module order, and all 4
inserted(!). The facts marked (!) are a giveaway for a faulty memory
controller, in this case located inside an AMD CPU. All 4 memory modules
are fine and working rock-solid for 16 months now on a new mobo.
So thumbs-down for memtest86...
Memory faults are notoriously difficult to find. You have to find a way
to trigger them, then replace components until the fault goes away
reliably (mark the removed components when that happens). If you can't
trigger the fault fast or easily you will get frustrated.
If any mem tester program finds a fault it is also not easy to find
which module it is in. I read in later Linux versions it is impossible
to reverse the memory address translation so a program address can't be
reversed to a physical address, which probably needs BIOS info anyway to
track to a module slot. Swapping modules is easier/faster and more
reliable.
HTH,
Volker
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