[ltp] RAM not fully recognized

[Bert Haskins]

Rolf Leggewie wrote:

>Hi,
>
>getting back to an old thread here
>(http://article.gmane.org/gmane.linux.hardware.thinkpad/19856).  In the
>meantime I have managed to pick up an 256MB module with 32Mx64 layout
>from Infineon (label is at http://pfaffe3.dyndns.org/infineon.jpg) which
>I thought would fit my X20, especially since there is even an IBM label
>on the other side with FRU number 19K4655.
>
>Alas, the computer only recognizes 128MB.  I also tried in my noname
>Clevo PIII notebook and it also only recognized 128MB.  Is the module
>faulty?  I guess not, but what exactly will I have to look out for when
>buying RAM for this machine?  Alex Deucher said "look for 32x64 PC100
>SO-DIMMs.  that should be enough."  OK, this module is PC133, but I
>guess this should not really be a problem.
>
>I seriously need to upgrade this machine.  192 MB is a pain even with
>just icewm.
>
>Regards
>
>Rolf
>
Desktop ram is quite often backward compatible.. i.e 133 will work in a 
100 buss machine.
Laptop ram very seldom is, the 133 is very likely to be the problem.