Messages in this thread | | | Date | Fri, 27 Oct 2006 09:41:36 -0700 | From | Marc Perkel <> | Subject | Re: Hardware Problem - Asus A8N-VM CSM |
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Langsdorf, Mark wrote: >>> The problem. 2 out of the 4 sees all 4 gigs of ram. The other 2 see >>> only 2.8 gigs of ram. And it's hardware related because in the bios >>> setup the ones that show 2.8 show it in the bios. >>> >>> The motherboards were not prchased at the same time. All have >>> different brands of ram. And the processors are different. >>> The 2 that don't see all the ram are the newest ones. >>> >>> I tried swapping ram between one that saw 2.8 gigs and one >>> that saw 4 gigs and the problem stays with the motherboard. >>> I haven't yet swapped out the processors. >>> >>> So - I'm a little stumped. Can someone point me in the >>> right direction? >>> > > Usually, missing memory comes from the PCI I/O hole, or the > IOMMU/AGP/framebuffer overlays. Does your BIOS have an > options for creating a memory hole or hoisting memory? If > so, are the settings between the 4G machines different from > the 2.8G machines? > > Also, do you have an IOMMU aperture enabled and if so, how > large? > > Are there any hardware differences between the systems, like > different AGP or PCI graphics cards? > > >> Answering my own question perhaps. Could it be related to >> whether or not the processor is a "revision e" chip? >> > > Possibly, but I'd expect the RevE parts to see more DRAM than > the earlier parts. > > >
I fixed the problem. It wasn't a Revision E issue after all. I just pulled the battery and when it came up clean it saw all the memory. Thanks for your help.
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