my system only indecates or sees my installed RAM in 3.7 GB and I have 4GB Plugged RAM and I wonder why it indicates it 3.7GB ??

Asked by Hamza Iraqi on 2012-01-23

my system only indicates or sees my installed RAM in 3.7 GB and I have 4GB Plugged RAM and I wonder why it indicates it 3.7GB ??
am using AMD64 bit distro

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-system-monitor 2.28.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-13.54-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic x86_64
NonfreeKernelModules: wl
Architecture: amd64
Date: Mon Jan 23 22:57:35 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-system-monitor
UpgradeStatus: No upgrade log present (probably fresh install)

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu gnome-system-monitor Edit question
Assignee:
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Last query:
2012-01-23
Last reply:
2012-01-26
Hamza Iraqi (hamza-iraqi) said : #1
Phillip Susi (psusi) said : #2

If you have an integrated video card, it is probably because some of the ram is used for that. You can look in /var/log/kern.log for the section mentioning the e820 memory map to see exactly what memory your motherboard is reporting.

delance (olivier-delance) said : #3

You will have same report from a 32 bits Windows.
The remaining addressing space is reserved for devices on PCI bus.
You need to switch on a 64 bits OS to use the remaining 0.3GB.

Phillip Susi (psusi) said : #4

Or use the PAE kernel, but the original question specifically says he is running 64 bit.

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