[问题]ubuntu6.06桌面版怎样支持双CPU

[playcase]

今天给实验室的服务器加了一个CPU,系统是ubuntu6.06 desktop,但是好象新cpu没有被使用。
用了dmesg |grep CPU

得到信息：
17179569.184000] WARNING: NR_CPUS limit of 1 reached. Processor ignored.
[17179569.184000] WARNING: NR_CPUS limit of 1 reached. Processor ignored.
[17179569.184000] WARNING: NR_CPUS limit of 1 reached. Processor ignored.
[17179569.184000] Initializing CPU#0
[17179570.856000] CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000 0000641d 00000000 00000001
[17179570.856000] CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000 0000641d 00000000 00000001
[17179570.856000] CPU: Trace cache: 12K uops, L1 D cache: 16K
[17179570.856000] CPU: L2 cache: 2048K
[17179570.856000] CPU: After all inits, caps: bfebfbff 20100000 00000000 00000080 0000641d 00000000 00000001
[17179570.856000] CPU: Intel(R) Xeon(TM) CPU 2.80GHz stepping 0a
[17179573.512000] ACPI: Processor [CPU1] (supports 8 throttling states)