Detecting increased RAM in Debian Sarge

[Lennart Sorensen]

On Wed, Feb 21, 2007 at 04:43:28PM -0500, Meng Cheah wrote:
> I have a dualboot desktop (Windows XP/Debian Sarge).
> The motherboard is an Asus K8N with 3 memory slots.
> I had two 512 memory chips in the first 2 slots.
> I added a 1G memory chip to the 3rd slot this morning.
> All chips are Kingston PC3200.
> 
> The BIOS detects 2 G RAM.
> Windows XP detects 2 G RAM.
> Knoppix 5.1.1 detects 2 G RAM.
> 
> free, top, dmesg and /proc/meminfo on Knoppix displays 2 G RAM.
> But free, top, dmesg and /proc/meminfo on Sarge still displays 1 G RAM.
> 
> I switched the 1 G chip to the first slot and the two 512 M chips to the 
> second and third slots.
> Same results. Bios, XP and Knoppix displays 2 G RAM while Sarge displays 
> 1 G RAM.
> 
> How do I make my system detect all 2 G RAM?

Which kernel are you running?  Remember it used to be common for linux
kernels to only support 900MB ram since anything else required himem
support.  All newer kernels tend to have support for 4GB (I think most
2.6 kernels in debian do for example, but 2.4 certainly didn't).

--
Len Sorensen
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