声卡无声

杨志全

BLFS 内核2.6.17.11选上了alsa选项，及我的声卡ac97支持，内核编译成功，安装了KDE，安装了alsa-lib-1.0.12 和alsa-utils-1.0.12 ，
alsa-driver-1.0.12因为在内核里选上了alsa选项，提示alsa-driver已安装。用alsaconf配置了alsa。运行alsamixer把各选项用打开。但声卡没有声音。请教如何解决。
modprobe.conf

# --- BEGIN: Generated by ALSACONF, do not edit. ---
# --- ALSACONF version 1.0.12 ---
alias char-major-116 snd
alias char-major-14 soundcore
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
alias snd-card-0 snd-intel8x0
alias sound-slot-0 snd-intel8x0
# --- END: Generated by ALSACONF, do not edit. ---