[ltp] problems with memory upgrade

[Tino Keitel]

On Fri, Mar 04, 2005 at 13:25:29 +0100, Stefan Blum wrote:
> Hi, I know that this is the linux-tp mailing list (but hey, my X20
> runs linux!) :)
> Now the X20 has 64mb soldered in and 1 slot for upgrades. It supports
> 320mb max. So I bought a 256mb kingston module - however, the
> notebook only recognises a total of 192mb, which means the new module
> is seen as a 128mb module.

I think your x20 uses an Intel BX chipset (check with lspci). This
chipset only supports modules with 128 mbit chips. Newer and cheaper
256 MB modules have larger chips, but those can not be used with the
full capacity because of the limited address lines of the BX chipset.

Modules which will work with the x20 are more expensive and not so
common.

> Back to the store, the guy tells me that for IBM-Thinkpads I must use
> special IBM-memory - something about different voltage with the
> bios...

That's pure nonsense IMHO. IBM uses standard SODIMMS.

> 
> Did anybody experience similar problems? One should think that once the new 

Yeah, I bought a 256 MB module for a T20 on eBay...

> module is within the general specifications for the notebook it should 
> work...

Regards,
Tino