问一下关于电视卡的问题-已经驱动了

我用的是epmia 2820芯片的usb电视盒，内核已经编译成功。
lsmod:
em28xx 38312 1
compat_ioctl32 1280 1 em28xx
ir_common 24068 1 em28xx
videodev 18688 2 em28xx
v4l1_compat 11396 2 em28xx,videodev
v4l2_common 18560 4 tuner,saa7115,em28xx,videodev
tveeprom 12432 1 em28xx
usbcore 93828 3 em28xx,ehci_hcd
i2c_core 14992 8 tuner,saa7115,em28xx,tveeprom,nvidiafb,i2c_algo_bit,nvidia,i2c_i801

在网上看到大家都用xawtv这个软件，于是安装了这个。
1 可是没有找到scantv这个程序，不知道怎么扫描频道
2 运行xawtv这个命令之后显示：

This is xawtv-3.95, running on Linux/i686 (2.6.18-gentoo-r6)
WARNING: v4l-conf is compiled without DGA support.
/dev/video0 [v4l2]: 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

请达人提示一下怎么操作？如何选择频道？v4l-conf设置的错误怎么处理？

谢谢！