[ltp] Only 3 out of 4 GB detected

[Cherife Li]

On 05/30/08 17:47, Nathaniel Smith wrote:
> On Fri, May 30, 2008 at 10:41:20AM +0200, Marcus Better wrote:
>> Hi,
>>
>> I replaced the RAM in my Thinkpad R60 with 2x2 GB modules (Corsair),
>> but now only 3 GB show up in Linux and in Memtest86+ 2.01. What to do?
>>
>> Yes, I'm running an x86_64 kernel (2.6.25). The CPU is Intel Core 2 Duo.
> 
> If it's a *60 and you have the Intel integrated graphics, then there
> is nothing you can do (except upgrade to a *61); there's a hardware
> limitation in those machines that they can only address 3G of RAM.
Which type of hardware limitation?
Has anyone tried to enable HIGHMEM64G support in kernel on *60s?
> (This is entirely separate from and in addition to the standard
> 32/64-bit cpu issues.)
> 
> -- Nathaniel
> 
-- 
Rgds,
Cherife.