Ubuntu 8.04 not seeing 2GB RAM Upgrade

[drew1701d]

what gives?...i installed a 2GB PNY memory chip...the BIOS sees it...but Ubuntu 8.04 is not seeing it in system monitor or when i run "free" from the terminal except for when I run

sudo lshw -C memory

*-firmware
description: BIOS
vendor: Dell Inc.
physical id: 1
version: A00 (08/05/2008)
size: 100KiB
capacity: 1984KiB
capabilities: pci pnp apm upgrade shadowing escd cdboot bootselect acpi usb smartbattery biosbootspecification
*-cache:0
description: L1 cache
physical id: 6
slot: L1 Cache
size: 32KiB
capacity: 32KiB
capabilities: asynchronous internal write-back
*-cache:1
description: L2 cache
physical id: 7
slot: L2 Cache
size: 512KiB
capacity: 4MiB
capabilities: burst external write-back
*-memory
description: System Memory
physical id: 10
slot: System board or motherboard
size: 2GiB
*-bank
description: SODIMM Synchronous 533 MHz (1.9 ns)
physical id: 0
slot: M1
size: 2GiB
width: 32 bits
clock: 533MHz (1.9ns)

any help is appreciated As Ubuntu still thinks its limited to 1GB!

"I'm certifiable, not certified. It just means my answers are from experience...not a book

 

[danomac]

Has the kernel been compiled with high memory support? When compiling, you can choose 1GB, 4GB, or 64GB. It sounds to me like 1GB is selected (and would explain why only 1GB is seen.)

 

[drew1701d]

How would I check that or is there a way to recompile the kernel to see the 2GB RAM?
This is an OEM install of Ubuntu on a Dell..though I have the Ubuntu CD handy if needed for recompiling the kernel

"I'm certifiable, not certified. It just means my answers are from experience...not a book

 

[danomac]

Have you tried reinstalling the kernel from the ubuntu repository?

You might get better luck on dealing with kernels on the ubuntu forums.