On Fri, 2014-11-07 at 22:30 -0600, Bruce Dubbs wrote: > I upgraded an older system's version of seamonkey today and noticed that > it was causing some swapping. I had 2G of RAM, but the system can take > up to 4G. > > I plugged it in and indeed, the bios tells me that 4G is present. > > However when I boot, the kernel does not find it all. > > The system is a 10 year old 686 and from dmesg: > > DMI: Dell Inc. Precision WorkStation 370 /0 M3849, BIOS A04 03/16/2005 > > [ 0.000000] 887MB LOWMEM available. > [ 0.000000] mapped low ram: 0 - 377fe000 > [ 0.000000] low ram: 0 - 377fe000 > [ 0.000000] Zone PFN ranges: > [ 0.000000] DMA 0x00000010 -> 0x00001000 > [ 0.000000] Normal 0x00001000 -> 0x000377fe > [ 0.000000] HighMem 0x000377fe -> 0x000bfe8a > > [ 0.000000] Memory: 3112504k/3144232k available (3678k kernel code, > 31280k reserved, 1423k data, 340k init, > 2234928k highmem) > > In other words, Linux only sees 3112504k. I suspect a kernel > misconfiguration, but what?
Heya, some thoughts on that: 1.) Are the RAM-modules the same? FSB, manufacturer? Double - Single sided? 2.) Did you try the modules on another system? 3.) Check if the MB supports Single - Double sided modules and if on both slots? 4.) Some 686 CPU's don't play well with PAE. Had some of them during my time. And yes it's definately a HW problem. I read somewhere in the replies to update your BIOS. That might help. Had some of those as well. Hope I could help.
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