My ubuntu 64-bit 11.10 installed box has 6GB RAM but Ubuntu only uses 4.1GB.
I have read various things about the 4GB limit etc, but all those talk about using less than 4GB.
What could be causing this?
My Hardware:
- Asus P5Q Pro
- Intel Core 2 Quad Q6600 @ 2.40GHz x4
- GeForce 9600GT (1024MB) Card not integrated
- 3x 2GB DDR2 RAM Modules – PC-6400
Output of uname -a
Linux ASUS-P5Q-PRO 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Best Answer
Check in the BIOS to see if there is a setting for 32-bit & 64-bit HPET timer. I've found when the HPET is set to 32-bit, it tends to not address all of the memory available. I don't know how a timer can play in this, but make sure it is set to 64-bit. I could be reaching here, but it's worth a shot.
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