求救：使用摄像头什么都看不见

使用摄像头出现如下问题
[root@localhost bin]# ./xawtv
This is xawtv-3.95, running on Linux/i686 (2.6.11-1.1369_FC4)
xinerama 0: 800x600+0+0
WARNING: No DGA support available for this display.
/dev/video0 [v4l]: no overlay support
v4l-conf had some trouble, trying to continue anyway
Warning: Missing charsets in String to FontSet conversion
Warning: Cannot convert string "-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*" to type FontStruct
Warning: Missing charsets in String to FontSet conversion
Warning: Missing charsets in String to FontSet conversion
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=0): 被中断的系统调用
v4l: timeout (got SIGALRM), hardware/driver problems?
ioctl: VIDIOCSYNC(int=1): 被中断的系统调用
game over
[root@localhost bin]#
可以看到xawtv出现了一个窗口 里面全是黑色 什么都看不到
驱动用的是 gspcavl－20070508.tar.gz内核是2.6.11-1.1369_FC4-i686
摄像头Logitech Pro 4000
lsmod可见
gspca                 661168  0
videodev                9537  1 gspca
就不知道还有什么其它问题了～～～谢谢～～　　　　　　
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