Frequent ubuntu "freezes" after RAM upgrade

[Andrea Fortino]

 > On Sat, 26 Dec 2009, Andrea Fortino wrote:
 >> Date: Sat, 26 Dec 2009 19:27:41 +0100
 >> From: Andrea Fortino <andreas.fortino at gmail.com>
 >> To: ubuntu-users at lists.ubuntu.com
 >> Subject: Frequent ubuntu "freezes" after RAM upgrade
 >>
 >> Hi,
<SNIP>
 >>
 >> BIOS can read all of 3 GB, but ubuntu often "freezes" after some minutes
 >> of work. So I try ubuntu memory test (option from GRUB menu). Test #5
 >> ("block move, 64 moves") reports numerous errors. Retried memory test,
 >> with only 2 GB (checked every possible combination of 3 blocks): no
 >> errors found.
<SNIP>
 >>
 >> Ciao,
 >> Andrea
 >>


accessys at smart.net ha scritto:
> have you tried removing one of the card s and seeing how it ran with 2gb 
> rather than 3gb??
> 
> Bob
> 

Yes, thank you, now I'm running with 2x1GB, but I often use virtual 
machines so 3 GB would be much better.

I thought maybe something wrong with one of the 3 RAM slot of the 
motherboard, but I checked all of them: they works. Problem should be 
software, but I can't find where.

Andrea