Re: Only 3.6gb of 64gb RAM recognized by 64bit squeeze
On Wed, 2012-05-09 at 11:19 +0200, Seyyed Mohtadin Hashemi wrote:
> Hello,
>
> Before anybody starts arguing that I don't have 64-bit, this is uname
> -r and uname -m:
> root@n03:~# uname -r
> 2.6.32-3-amd64
> root@n03:~# uname -m
> x86_64
>
> As the subject suggest I have a box that does not utilize the
> available RAM installed. I noticed that only 3.6gb RAM was recognized
> when I got segmentation faults during a simulation.
>
> The funny thing is that when I remove dims so that only 48gb RAM is
> available then it works fine, I did a 'lshw -C memory' and it shows
> all the dims at the correct spot (the output is attached). BIOS and
> memtest show and successfully test all 64gb.
A lot of people do have this issue on different distros. I noticed that
256MB of my 4GB where missing on 64-bit, while for a 32-bit PAE there
where 4GB.
I couldn't find a cause or solution in the Internet.
On my machine I found out, that I'm using a NVIDIA graphics that has
256MB own RAM, but the proprietary settings thingy does show that it has
got 512MB available. Perhaps your framebuffer is 60GB large :D. I've got
no idea why this happened.
Regards,
Ralf
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