Memory size in 9.04

Derek Broughton derek at pointerstop.ca
Mon Jul 6 13:19:00 UTC 2009


Fred Roller wrote:

> On Mon, 2009-07-06 at 08:19 -0400, Александр Горлов wrote:
>> I have 4GB memory on my laptops, but TOP utility shows that only 3GB
>> is used. Some part of RAM is used for video memory as I know. I will
>> be very surprised in case 1GB of RAM is used for video memory.
> 
> 32 bit OS's are limited to 3 Gb of RAM.  To use the full 4 Gb you own,
> you need to either install the 64 bit Ubuntu (If this is an option) or
> install the Physical Addressing Extensions (PAE) for the 32 bit OS.  For
> Ubuntu it amounts to installing the server kernel.
> 
> $ sudo apt-get update
> $ sudo sudo apt-get install linux-headers-server linux-image-server
> linux-server
> 
> The above is explained at
> http://www.cyberciti.biz/faq/ubuntu-linux-4gb-ram-limitation-solution/
> 
It's a bit harder than that - I went that road, and still only see 3GB.   
This 4GB 32-bit machine has only ever had a -server kernel.
-- 
derek






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