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On Mon, Jan 18, 2010 at 6:09 PM, Mark Knecht <markknecht@×××××.com> wrote: |
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> One of my machines smoked last week so when tearing it apart for spare |
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> parts I noticed the the PC2700 CL 2.5 memory is what my wife's machine |
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> uses and she had only 512MB so I took the opportunity to throw in a |
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> couple of DIMMs. When I boot Linux (and I'm writing this from Linux |
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> running the new memory so the machine works) top reports only about |
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> 900MB while BIOS itself says 2GB. I fired up memtest86 and it reports |
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> 2GB. It's been running memory tests for a couple of hours now with no |
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> problems so it seems like it should work. |
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> |
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> Is there anything in the kernel config that would stop a 2.6.32-gentoo |
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> kernel from seeing all the memory? |
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> |
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> I have double checked that the memory does seem to be seated well in |
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> the DIMM sockets. |
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> |
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> The box is an old eMachines thing that has no support and so far I |
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> can't find any BIOS updates. |
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> |
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> How does memory get reported up to the kernel? Is that something in |
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> the kernel (i.e. - choosing the proper chipset support or something) |
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> or is it purely the return from some sort of BIOS call? If so can it |
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> be tested or circumvented to get the machine to recognize everything |
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> I've put in? |
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> |
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> Thanks, |
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> Mark |
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|
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A very simple test - booting from an old Gentoo install CD - shows 2GB |
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- so apparently it's a kernel config issue. |
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Sorry for the noise. |
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|
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Cheers, |
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Mark |