Arch Linux

Pusztito

Member

Registered: 2009-08-09

Posts: 9

4gb

Hi!
There is an acer aspire 5930G my laptop 4GB with a memory. only 3GB half an ounce.
Other system i tried but there only 3GB half an ounce. How I know it to cheat the 4GB.
OP: x86_64

Wintervenom

Member

Registered: 2008-08-20

Posts: 1,011

Re: 4gb

Maybe some of the memory has been reserved for the graphics processor, since it has no RAM of its own.

Pusztito

Member

Registered: 2009-08-09

Posts: 9

Re: 4gb

Maybe some of the memory has been reserved for the graphics processor, since it has no RAM of its own.

How it is possible to look at it what keeps it busy? Bribed all were found under Windows.

fukawi2

Ex-Administratorino

From: .vic.au

Registered: 2007-09-28

Posts: 6,231

Website

Re: 4gb

Can you post the output of the following 2 commands please?

uname -a
free -m

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Pusztito

Member

Registered: 2009-08-09

Posts: 9

Re: 4gb

Can you post the output of the following 2 commands please?

uname -a
free -m

[pusztito@pusztito-pc ~]$ uname -a
Linux pusztito-pc 2.6.30-ARCH #1 SMP PREEMPT Fri Jul 31 07:30:28 CEST 2009 x86_64 Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz GenuineIntel GNU/Linux
[pusztito@pusztito-pc ~]$

[pusztito@pusztito-pc ~]$ free -m
             total       used       free     shared    buffers     cached
Mem:          3012       2986         26          0         52       2552
-/+ buffers/cache:        381       2631
Swap:          956          0        956
[pusztito@pusztito-pc ~]$

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: 4gb

How about the output of

dmesg | grep Memory:

Also how much memory does the bios detect during POST?

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R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K

Pusztito

Member

Registered: 2009-08-09

Posts: 9

Re: 4gb

How about the output of

dmesg | grep Memory:

Also how much memory does the bios detect during POST?

[pusztito@pusztito-pc ~]$ dmesg | grep Memory
Memory: 3083196k/3143680k available (3409k kernel code, 3272k absent, 56576k reserved, 1239k data, 464k init)
[pusztito@pusztito-pc ~]$

The bios his half an ounce all the 4gb memory.

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: 4gb

Ok so the kernel only detects 3GB of memory, most probably because the bios only reports 3GB, maybe you need to check the bios options about the memory hole or something to be able to use the 4GB.

What I couldn't understand is if the bios reports 3GB or something between 3GB and 4GB (sorry, my native language is not english couldn't understand what you mean by "The bios his half an ounce all the 4gb memory." ).

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R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K

sirocco

Member

Registered: 2008-03-10

Posts: 149

Re: 4gb

http://aps2.toshiba-tro.de/kb0/TSB82022E0000R01.htm

There are several conditions to use all 4GB memory on a notebook that has 4GB of memory installed.

    * The chipset must support 8GB of address space.
      The Intel chipsets PM965 and GM965 and newer or AMD64 CPU's could address up to 8GB.
      e.g. the Intel chipset family 945 did only support up to 4GB address space.

Pusztito

Member

Registered: 2009-08-09

Posts: 9

Re: 4gb

Ok so the kernel only detects 3GB of memory, most probably because the bios only reports 3GB, maybe you need to check the bios options about the memory hole or something to be able to use the 4GB.

What I couldn't understand is if the bios reports 3GB or something between 3GB and 4GB (sorry, my native language is not english couldn't understand what you mean by "The bios his half an ounce all the 4gb memory." ).

is properly according to bios the 4gb