2009/5/6 Nadav Horesh <[email protected]>: > > I recently added 4GB to the existing 2GB I had. The BIOS and lshw recognize > the memory configuration (2 dimm of 1G and 2 of 2G), but /prc/meminfo and a > test program I ran recognize 3.2GB. > > My system configuration: > cpu: core2 6600 > chipset: DP965LT (Intel's motherboard) > > $ uname -a > Linux nadav 2.6.27-gentoo-r8 #1 SMP PREEMPT Wed May 6 16:53:07 IDT 2009 > x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz GenuineIntel GNU/Linux > > c$ cat /proc/meminfo > > MemTotal: 3347392 kB > MemFree: 2687760 kB > Buffers: 22912 kB > Cached: 350868 kB > SwapCached: 0 kB > Active: 315244 kB > Inactive: 268072 kB > SwapTotal: 2008116 kB > SwapFree: 2008116 kB > Dirty: 24 kB > Writeback: 0 kB > AnonPages: 209536 kB > Mapped: 75700 kB > Slab: 30152 kB > SReclaimable: 17292 kB > SUnreclaim: 12860 kB > PageTables: 11760 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 3681812 kB > Committed_AS: 473288 kB > VmallocTotal: 34359738367 kB > VmallocUsed: 176468 kB > VmallocChunk: 34359561723 kB > DirectMap4k: 15360 kB > DirectMap2M: 3391488 kB > > > Memory report out of lshw: > > > *-memory > description: System Memory > physical id: 17 > slot: System board or motherboard > size: 6GiB > *-bank:0 > description: DIMM Synchronous 667 MHz (1.5 ns) > product: 0x202020202020202020202020202020202020 > vendor: 0x7F98000000000000 > physical id: 0 > serial: 0xD1CCDFF7 > slot: J6H1 > size: 2GiB > width: 64 bits > clock: 667MHz (1.5ns) > *-bank:1 > description: DIMM Synchronous 667 MHz (1.5 ns) > product: 0x000000000000000000000000000000000000 > vendor: 0x7F98000000000000 > physical id: 1 > serial: 0x6C06E0E5 > slot: J6H2 > size: 1GiB > width: 64 bits > clock: 667MHz (1.5ns) > *-bank:2 > description: DIMM Synchronous 667 MHz (1.5 ns) > product: 0x202020202020202020202020202020202020 > vendor: 0x7F98000000000000 > physical id: 2 > serial: 0xD1CCFFF7 > slot: J6J1 > size: 2GiB > width: 64 bits > clock: 667MHz (1.5ns) > *-bank:3 > description: DIMM Synchronous 667 MHz (1.5 ns) > product: 0x000000000000000000000000000000000000 > vendor: 0x7F98000000000000 > physical id: 3 > serial: 0x660663BC > slot: J6J2 > size: 1GiB > width: 64 bits > clock: 667MHz (1.5ns) > > Any idea? > > Nadav > >
What kind of RAM did you use? Intel motherboard are extremely picky about RAM - CAS 5 1.8V stuff only. I think they mandate the PCB is green as well =). Still tho, odd lshw is picking up all the DIMMS are installed but OS can't see it. +1 on memtest.
