Mailinglist Archive: opensuse-amd64 (302 mails)

[Ken Siersma <siersmak@xxxxxxxxxx>]

Andi Kleen wrote:

> > so I'm not sure which kernel you are actually running).  I set my Adjust 
> > Memory option in the BIOS to Auto, put in the other 2 GB of RAM, and 
> >    
>
> That's the problem. This option doesn't seem to work reliably
> on the Tyan boards. Turn it off.
>
> -Andi
>  
Ah, but that seemed to be the only way according to Kevin Gassiot to get 
all 4 GB of my RAM to show up.  Without it, I get only 3264 MB or so - 
varies depending on the AGP Aperture.

I'll quote my original message, since I see it got lost in the replies.  
I see that you previously responded that you don't recommend using this 
option.

> Sorry if this is not specifically an X86-64 question.
>
> I have a Dual Opteron 250 with 4 GB of RAM with an NVIDIA QuadroFX 
1100 card, with Suse 9.1 X86-64 installed with
> updates (kernel version 2.5.5-7.111.19-smp).  The BIOS recognizes all 
4 GB of RAM, but the OS only sees 3.26GB.  I've been
> told this is because the video card is taking up system memory.  But 
could it really be taking up this much?
>
> Changing the AGP aperture size in the BIOS does affect how much RAM 
is occupied by the video card.  Currently it is set to
> 32 MB.  If I set it to the maximum of 512 MB, a measly 2.4GB are 
available.
>
> I also thought this was strange - if I set the AGP aperture to 32 MB, 
and then try 1, 2, 3, and 4 GB, I see different percentages of
> system memory being unavailable.  Here's what I see:

> 1 GB -> 91.8%
> 2 GB -> 95.2%
> 3 GB -> 96.4%
> 4 GB -> 81.5%

> Is their anything I can do in Suse to give me back more of my system 
RAM?  Seems like that last GB was a waste of money...

> Thanks for any help you can offer.
> Ken