系统有时候声卡不可用

kimoohuang

archlinux,正常情况下gnome-control-center中的sound选项卡如图:

但是有3/4的时候开机后没有声卡可选,只有dummy output,系统不会外放声音.

而且

1. $ sudo tail /var/log/messages.log
   
2. May 15 16:22:06 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
3. May 15 16:22:08 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
4. May 15 16:22:10 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
5. May 15 16:22:12 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
6. May 15 16:22:14 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
7. May 15 16:22:16 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
8. May 15 16:22:18 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
9. May 15 16:22:20 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
   
10. May 15 16:22:22 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
    
11. May 15 16:22:24 localhost /etc/gdm/Xsession[1560]: sh: amixer: command not found
    

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每两秒种就打一个这样的log.但是能装的我都装了.

1. $ sudo pacman -Ss amixer
   
2. extra/gnome-alsamixer 0.9.7-1 [installed]
   
3.     Gnome ALSA mixer
   
4. archlinuxfr/pamixer 1.1-4 [installed]
   
5.     Pulseaudio command-line mixer like amixer

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前几天照网上的一些帖子改成了如下这个样子,也不起作用.

1. $ cat /etc/modprobe.d/sound_persistent.conf
   
2. options snd-hda-intel model=auto
   
3. options snd slots=snd_hda_intel
   

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不知道有没有人能给点建议.