代碼如下:

sudo gedit /etc/default/speech-dispatcher

將RUN=yes改為RUN=no保存，這時不用重啟。打開Sound Settings，會看到

 

然后輸入

sudo alsa force-reload

如果這個還不行，重裝Alsa and Pulse audio
 

sudo apt-get remove --purge alsa-base pulseaudio
sudo apt-get install alsa-base pulseaudio

然后
 

sudo alsa force-reload