各位大侠这部分内容是不是系统管理？？？
系统管理是什么方面的，请概述一下（是不是包括一个操作系统的方方面面，维护，维修，安全，更新，错误的调试）
如果我想了解linux 的工作机制要看什么书？？？
我今天安装了声卡驱动
安装驱动的原因：
插上耳机，扬声器和耳机一起响
网上说是驱动问题
安装完成后:
本来能发声的系统装过后不能发声了
我不会配置！！！
声卡型号nvidia GF 8400T
我是fedora9系统
联想C466A-ux
以下是mplayer的错误信息有意帮忙的朋友可以参考（我觉得它有点价值）
[LD@zdlcumputer]~% mplayer music/*
MPlayer 1.0rc2-4.3.0 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Core(TM)2 Duo CPU T5750 @ 2.00GHz (Family: 6, Model: 15, Stepping: 13)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
Playing music/34.mp3.
Audio file file format detected.
Clip info:
Title: ??? o.a
Artist: ???/???/???
Album: ???? ?????
Year: 2005
Comment:
Track: 34
Genre: Unknown
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '0'
[AO_ALSA] alsa-lib: conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
[AO_ALSA] alsa-lib: conf.c:3985:(snd_config_expand) Evaluate error: No such file or directory
[AO_ALSA] alsa-lib: pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default
[AO_ALSA] Playback open error: No such file or directory
[AO ARTS] can't connect to aRts soundserver
[AO ESD] latency: [server: 0.19s, net: 0.00s] (adjust 0.19s)
AO: [esd] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
MPlayer interrupted by signal 13 in module: play_audio
- MPlayer crashed. This shouldn't happen.
It can be a bug in the MPlayer code _or_ in your drivers _or_ in your
gcc version. If you think it's MPlayer's fault, please read
DOCS/HTML/en/bugreports.html and follow the instructions there. We can't and
won't help unless you provide this information when reporting a possible bug.
