I have a Lenovo ThinkPad T60P with 4GB of memory (BIOS sees all 4GB RAM). I have installed Ubuntu 11.04 and 11.10 and both are only recognizing 3GB RAM. Please advise.
Used 32bit ver for both 11.04 and 11.10. Just installed 11.10 64 bit and machine now only sees 2.9 gb.
Intel Core 2 Duo Processor T7600
ThinkPad-T60p:~$ uname -a Linux ThinkPad-T60p 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux flags: fpu vme de pse tsc msr PAE mce cx8 apic etc, etc...
4GB of Crucial RAM, memory test Passed. Current BIOS is 2.27 dated 3/21/11
Sending memory back to vendor for replacement. Hope that takes care of it.