[ltp] X60s 4 GB RAM PAE only 3 recognized (64 Bit)

Thu, 13 Nov 2014 14:23:14 +0100

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You have to remember that the RAM in this machines is shared with graphics. Thats why you only see 3gig RAM.

Den 13. november 2014 13:53:28 CET, skrev birger <birger@birger.sh>:
>32bit addressing can only see 4GB RAM.
>Some 32bit intel processors have an extension called PAE that enables a
>32bit processor to address far more memory. To use this you need a PAE
>kernel. A PAE kernel will fail if you try to boot it on a non-PAE
>processor.
>
>In your place I would upgrade to 64bit linux. The linux kernel handles
>memory more efficiently in the 64bit kernel if you have more than 1GB
>RAM. You can still run 32bit versions of applications if you want to do
>that.
>
>Two of my children have X60s with 5GB RAM, SSD and 64-bit fedora. :-)
>
>On Thu, 2014-11-13 at 09:41 +0100, Uwe Brauer wrote:
>> Hello
>> 
>> 
>> I bought my X60s with 500 MG of RAM, upgraded to 2.5, which was not
>> recognized till I installed a PAE enabled kernel for my 32 bit
>Kubuntu.
>> 
>> Now I upgraded again to 4 GB RAM, but even with PAE enabled only 3
>are
>> recognized. 
>> 
>> Would it help to upgrade to a 64 bit version of Ubuntu?
>> 
>> On my X200s the 4 GB RAM are recognized via PAE, so I presume the
>answer
>> would be no, but I don't really understand the differences between
>PAE
>> and 64 in all details.
>> 
>> Thanks 
>> 
>> Uwe Brauer 
>> 
>
>
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>The linux-thinkpad mailing list home page is at:
>http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad

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<html><head></head><body>You have to remember that the RAM in this machines is shared with graphics. Thats why you only see 3gig RAM.<br><br><div class="gmail_quote">Den 13. november 2014 13:53:28 CET, skrev birger &lt;birger@birger.sh&gt;:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">32bit addressing can only see 4GB RAM.<br />Some 32bit intel processors have an extension called PAE that enables a<br />32bit processor to address far more memory. To use this you need a PAE<br />kernel. A PAE kernel will fail if you try to boot it on a non-PAE<br />processor.<br /><br />In your place I would upgrade to 64bit linux. The linux kernel handles<br />memory more efficiently in the 64bit kernel if you have more than 1GB<br />RAM. You can still run 32bit versions of applications if you want to do<br />that.<br /><br />Two of my children have X60s with 5GB RAM, SSD and 64-bit fedora. :-)<br /><br />On Thu, 2014-11-13 at 09:41 +0100, Uwe Brauer wrote:<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;"> Hello<br /> <br /> <br /> I bought my X60s with 500 MG of RAM, upgraded to 2.5, which was not<br /> recognized till I installed a PAE enabled kernel for my 32 bit Kubuntu.<br />
  <br />
Now I upgraded again to 4 GB RAM, but even with PAE enabled only 3 are<br /> recognized. <br /> <br /> Would it help to upgrade to a 64 bit version of Ubuntu?<br /> <br /> On my X200s the 4 GB RAM are recognized via PAE, so I presume the answer<br /> would be no, but I don't really understand the differences between PAE<br /> and 64 in all details.<br /> <br /> Thanks <br /> <br /> Uwe Brauer <br /> <br /></blockquote><br /></pre></blockquote></div><br>
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