声卡 Conexant CX20549已经驱动，但是系统没有声音？？？？？？？

jxvtc

系统及机器信息：
[root@shell /]# uname -a
Linux shell 2.6.23.1-21.fc7 #1 SMP Thu Nov 1 20:28:15 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux

检测到的声卡：
[root@shell /]# lspci -v  |  grep Audio
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)

详细驱动管理信息如下：
[root@shell /]# amixer
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 43
  Mono:
  Front Left: Playback 32 [74%] [on]
  Front Right: Playback 32 [74%] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 191 [75%] [-12.80dB]
  Front Right: Playback 191 [75%] [-12.80dB]
Simple mixer control 'LineIn',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Ext Mic',0
  Capabilities: volume pswitch
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 23
  Front Left: 23 [100%] [34.50dB] Playback [off]
  Front Right: 23 [100%] [34.50dB] Playback [off]
Simple mixer control 'Int Mic',0
  Capabilities: volume pswitch
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 23
  Front Left: 23 [100%] [34.50dB] Playback [off]
  Front Right: 23 [100%] [34.50dB] Playback [off]
Simple mixer control 'IntMic',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [on]


在运行system-config-soundcard时能够检测到声卡，但是检测时不能发出声音，而机器在windows下能够正常发音的，据说alsa驱动默认是静音的，我运行：
[root@shell Documents]# amixer -c 0 sset 'Master',0 100%,100% unmute
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 43
  Mono:
  Front Left: Playback 43 [100%] [on]
  Front Right: Playback 43 [100%] [on]

和：
[root@shell Documents]# amixer -c 0 sset 'PCM',0 100% unmute
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]

后，系统还是没有声音，这是为什么？是我哪里设置得不对呢？

jxvtc

恳求高手指点！

jxvtc

难道没有人愿意提示一下？

toeight

装下alsa-utiles 试试看