Ubuntu 下认不到USB 转串口的设备？

Ubuntu 9.10 系统下面的/lib/modules/2.6.31-14-generic/kernel/drivers/usb/serial/文件下面有cp210x.ko这个文件，可是把USB 转串口的设备插到主机中。在/dev/ 下面却没有ttyUSB0这个设备号。终端输入lsmod之后的结果是：
Module                  Size  Used by
nls_iso8859_1           3740  0 
nls_cp437               5372  0 
vfat                   10716  0 
fat                    51452  1 vfat
usb_storage            52544  0 
acpiphp                22480  0 
binfmt_misc             8356  1 
iptable_filter          3100  0 
ip_tables              11692  1 iptable_filter
x_tables               16544  1 ip_tables
snd_ens1371            22016  2 
gameport               11368  1 snd_ens1371
snd_ac97_codec        101216  1 snd_ens1371
ac97_bus                1532  1 snd_ac97_codec
snd_pcm_oss            37920  0 
snd_mixer_oss          16028  1 snd_pcm_oss
snd_pcm                75296  3 snd_ens1371,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy           2656  0 
snd_seq_oss            28576  0 
snd_seq_midi            6432  0 
snd_rawmidi            22208  2 snd_ens1371,snd_seq_midi
snd_seq_midi_event      6940  2 snd_seq_oss,snd_seq_midi
snd_seq                50224  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
lp                      8964  0 
snd_timer              22276  2 snd_pcm,snd_seq
snd_seq_device          6920  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
ppdev                   6688  0 
snd                    59204  14 snd_ens1371,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
psmouse                56180  0 
serio_raw               5280  0 
parport_pc             31940  1 
parport                35340  3 lp,ppdev,parport_pc
soundcore               7264  1 snd
snd_page_alloc          9156  1 snd_pcm
i2c_piix4               9932  0 
shpchp                 32272  0 
pcnet32                32644  0 
mii                     5212  1 pcnet32
floppy                 54916  0 
mptspi                 17668  2 
mptscsih               34428  1 mptspi
mptbase                88132  2 mptspi,mptscsih
scsi_transport_spi     23036  1 mptspi
intel_agp              27484  1 
agpgart                34988  1 intel_agp
也找不到相应的usb_core这个模块。如果系统认的到usb转串口的设备，usb_core这个选项里面应该会有一个cp210x。请问这个是怎么回事，要怎么让系统识别的到usb转串口设备？谢谢！

3 个解决方案

#1

求救！。。。。。

#2

建议lsusb查看系统信息进一步做判断，
同时开个tail -f /var/log/message 拔插usb搜集更多信息，看是否有探测到usb设备

#3

重新编译内核 编译是可以选择 USB转串口功能