我有一台 Acer Aspire M5640/M3640 PC，配备运行 Ubuntu 12.04 的 Intel Core 2 Q8200（四核）处理器。
现在它似乎只能识别一个 CPU 内核。lscpu输出：
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 23
Stepping: 10
CPU MHz: 2333.403
BogoMIPS: 4666.80
L1d cache: 32K
L1i cache: 32K
L2 cache: 2048K
NUMA node0 CPU(s): 0
我本来希望拥有Core(s) per socket并CPU(s) …