64 bit Ubuntu sees half my RAM
- by koehn
This is on my AMD FX(tm)-4100 Quad-Core Processor (according to /proc/cpuinfo) on a machine with two 4GB RAM DIMMs. BIOS shows 8GB RAM installed. Any help would be appreciated.
RAM:
Extreme Performance Sector 5 G Series 8GB DDR3-1333 (PC3-1066) Enhanced Latency Dual Channel Desktop Memory Kit (Two 4GB Memory Modules)
MB:
GA-78LMT-S2P Socket AM3+ 760G mATX AMD Motherboard
CPU:
FX 4100 Black Edition 3.6GHz Quad-Core Socket AM3+ Boxed Processor
Here's what the software says:
$ free
total used free shared buffers cached
Mem: 3515100 3293656 221444 0 19260 2670352
-/+ buffers/cache: 604044 2911056
Swap: 3650556 90916 3559640
$ uname -a
Linux mythbuntu 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
From lshw:
*-memory
description: System Memory
physical id: 20
slot: System board or motherboard
size: 4GiB
*-bank:0
description: DIMM 1066 MHz (0.9 ns)
product: None
vendor: None
physical id: 0
serial: None
slot: A0
size: 2GiB
width: 64 bits
clock: 1066MHz (0.9ns)
*-bank:1
description: DIMM 1066 MHz (0.9 ns)
product: None
vendor: None
physical id: 1
serial: None
slot: A1
size: 2GiB
width: 64 bits
clock: 1066MHz (0.9ns)