ram 4 gig apears 3.2
i just upgraded the ram in my system put 2 new 2 gig sticks .
but monitor shows it as 3.2 gig inderviually both sticks come up as 2 gig id like my system to show them as 4 gig. any ides? im using mandriva 2009.1 powerpack kde 4.2 |
You may need to re-compile your kernel to support 4GB+ memory. Also this sometimes happens when the video card takes up system memory.
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It probably depends on what tool you use to report the size of the memory.
How about installing lshw, list hardware. Quote:
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You nearly never get all the installed memory as use able memory . Some is taken by the system it self and that part is not showing in linux. |
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Jim |
lshw
i ran lshw
it reported Code:
*-memory or should i put the ram in different slots? not really shaw how to recomplie the kernal? how do i do that? thanks for for relpys |
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Code:
top - 15:08:07 up 58 min, 1 user, load average: 0.05, 0.08, 0.10 If you say how to run the KDE thing you are using I'll try it and see what it says. From the lshw it *appears* you have four memory slots and have put the things in the first (0) and third. On the surface this appears a little counter intuitive - they might be better in first and second - but do not know at all. I'd just try running top and if it says roughly 4GB then assume it's alright unless you get good reason to think otherwise. I've never used 2 GB things myself so a bit in the dark. |
i just i ran lshw from the konsole as root i didnt have to install it from the package manger it was all ready installed there is a gui for it i didnt intall it.
on my motherboard dimm 0 & 3 are both yellow in color with with the other 2 being black in color. |
Sounds normal to me, for a kernel that is not compiled with 64Gib+ support (the largest memory support model).
/var/log/dmesg after bootup may also give clues to how the onboard memory is being interpreted by the kernel, but my suggestion is to compile the kernel with 64Gib support. Another consideration is this: not every motherboard's memory controller is able to make use of the full, "Advertised" maximum memory capability that you can possibly plug into the board. For example, a motherboard that allows 4Gib max memory to be istalled, might have a memory controller that is limited to accessing less than 4Gib. Sounds stupid, but this is the way it is; I suspect that better quality motherboards, and/or NEWER motherboards, suffer from this less. For comparison, though I'm running XFCE, I also have 4 Gib of memory installed: Code:
bash-3.1# top |
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http://wiki.mandriva.com/en/Docs/Howto/Mandriva_Kernels Jim |
@ jkerr,
OK, thanks, I didn't realize (or didn't fully read) that so many Mandriva kernels were available pre-compiled! One way or the other, the 64Gib support is desired, and yes, downloading a kernel would be much easier + faster than building one. Sasha |
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