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