Okay, thanks for the help.

For the record, has anyone actually tried a 512MB SO-DIMM in a Thinkpad A21m?

I have pinpointed the problem and am confused as to why I didn't recognize it before. One of the slots will give POST beeps if the only stick is in that slot, so basically I can only have half of the Thinkpad's full RAM capacity. :| It can take 2x 256MB = 512MB total. According to lshw or some other...

Ubuntu Server, OpenBox, Conky, Feh, and Tint2:

Oh, and my PowerMac G4, 733mhz, 1.25GB:

Your laptop is an A21m No, it's an A20m. For a 256MB module, that means 16 individual memory chips on the board and for a 128MB module it's 8 chips. Each of these 128MB modules have 8 individual memory chips. I really want to figure this out so I won't have to rely on swap so much, it's a really sl...

Please give us the 7-character TYPE-MODEL no. from the bottom of your laptop. Also give us all the info you can find on both RAM modules. "TYPE 2628-G9U" Stick 1: Toshiba, PC100-222-620, 16Mx64 SDRAM Stick 2: IBM certified Infineon, PC100-222-620, 16Mx64 SDRAM, 128MB, Sync, 100MHz, CL2 And I have s...

Hey all, new to this forum. I got a "new" ThinkPad A20m a while ago and after some issues (the intermittent shutting down) I have a nice system running Ubuntu 9.04. Now to my question, it has 256MB of memory installed, but only 128MB is recognized. If I take either SO-DIMM out, it will recognize the...