memory question

Chris Jones jonesc at
Mon Jan 5 12:21:44 UTC 2009


Paras pradhan wrote:
> Is there anything I can do to use full 4 GB of RAM instead of 3.24 GB
> when using 8.10 64 bit?. My machine is Dell 640m Laptop with A10 bios.
> Any one full utilizing 4 GB?

64 bit ubuntu should be able to access 4G of ram no problem, without any 
additional configuration. 3.24G reminds me of the 32 bit ram limit for 
standard (non PAE) kernels.

  - Are you *sure* you have installed the 64 bit version ? What does 
'uname -a' give you ? You should see x86_64 listed if you have the 64 
bit OS installed.

  - If you do indeed have a 64bit OS installed, I would next check your 
BIOS settings to see if something in there is limiting the available ram 
to the 32 bit limit (some do this I believe, as they assume you will 
only ever run 32 bit windows...).


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