Ecco la risoluzione del mio problema!!
dmesg
[ 0.000000] BIOS EBDA/lowmem at: 00099800/00099800
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 2.6.28-11-generic (buildd@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 (Ubuntu 2.6.28-11.42-generic)
[ 0.000000]
KERNEL supported cpus:
[ 0.000000] Intel GenuineIntel
[ 0.000000] AMD AuthenticAMD
[ 0.000000] NSC Geode by NSC
[ 0.000000] Cyrix CyrixInstead
[ 0.000000] Centaur CentaurHauls
[ 0.000000]
Transmeta GenuineTMx86[ 0.000000]
Transmeta TransmetaCPU[ 0.000000] UMC UMC UMC UMC