[Bug 1040623] Re: Ubuntu 12.04 64 bit recognises only 3gb out of 4gb

林博仁(Henry Lin) pika1021 at gmail.com
Sat Sep 22 14:47:38 UTC 2012


Have you tried using PAE kernel?
Which can be installed from software package "linux-image-generic-pae"

Its normal to see 32bit non PAE kernel can't use total 4GiB RAM.

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Title:
  Ubuntu 12.04 64 bit recognises only 3gb out of 4gb

Status in “ubuntu-meta” package in Ubuntu:
  New

Bug description:
  I have installed it using Wubi from Ubuntu. RAM 4GB. Processor AMD
  Turion 64 X2 TL-50 dual core. Hard disk 320GB. Basically it is a HP
  laptop model NX6325.  Ubuntu 12.04 64 bit recogises only 3gb out of
  4gb. Below is the output of some commands. Let me know if you need any
  other data

  free -m
               total       used       free     shared    buffers     cached
  Mem:          2885       2190        695          0        738        917
  -/+ buffers/cache:        534       2351
  Swap:         2047          0       2047

  
  lsb_release -a
  Distributor ID: Ubuntu
   Description: Ubuntu 12.04.1 LTS
   Release: 12.04
   Codename: precise

  uname -a
  Linux ubuntu 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  lshw (for memory)
  *-memory
             description: System Memory
             physical id: a
             slot: System board or motherboard
             size: 4GiB
           *-bank:0
                description: SODIMM DDR2 Synchronous 667 MHz (1.5 ns)
                product: JM667QSU-2G
                vendor: 7F4F000000000000
                physical id: 0
                serial: 000974F2
                slot: DIMM #1
                size: 2GiB
                width: 64 bits
                clock: 667MHz (1.5ns)
           *-bank:1
                description: SODIMM DDR2 Synchronous 667 MHz (1.5 ns)
                product: JM667QSU-2G
                vendor: 7F4F000000000000
                physical id: 1
                serial: 000974F2
                slot: DIMM #2
                size: 2GiB
                width: 64 bits
                clock: 667MHz (1.5ns)

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