4GB Ram on T60 with Debian (that see only 3GB)

[pictux]

Hi all.
In my T60 i've installed long time ago 4gb ram.
Of course, my Debian see only 3GB.

I read this post:
http://forum.thinkpads.com/viewtopic.php?f=29&t=49703
many times, but hope is still alive:
Is there a solution, like kernel recompile with High memory support at 64Gb, to use all my physical ram?

Thanks!
Regards
M

[Marin85]

Put shortly, NO. It is a hardware limitation that cannot by bypassed by any software.

[madcow]

The chipset of the T60 limits to 3 G of RAM. If you need to get 4 or 8 G of RAM, you have to upgrade to T61.

[pictux]

Thanks for the notices.
I know that but i hope that..

Regards
M

[Marin85]

Thanks for the notices.
I know that but i hope that..

Regards
M

I can understand you very well, in the beginning we were all hoping just the same, but after a while one gets used to the idea and gives up

Marin

[dk]

Hello.

Are you currently running the "bigmem" Debian kernel? Hopefully this post should shed some light on the topic.

http://knowledgelayer.softlayer.com/que ... all+my+ram!

[pictux]

I've already tried that, without success...
Isn't it an HW limit?

Regards
M

[pictux]

Yes, it's an HW limitation, due to:
Intel Corporation Mobile 945GM/PM/GMS

The 945 chipset can adress 4GB maximum. 4GB - IO-Space - gfx = 3GB
usable RAM.

as descibed here:
http://www.thinkwiki.org/wiki/Category: ... cellaneous
and discussed also here:
http://www.nabble.com/Only-3-out-of-4-G ... 54199.html

So, my new question is:
it's possible to replace this component?
Or i need to change the motherboard?
Or simply change laptop ?

Thanks!

[Marin85]

You can change the mobo if you find a newer one that would fit. Of course, the easiest solution would be to buy something based on Santa-Rosa or later.