سلام
من لپ تاپ ندارم ولی از ابونتو ۱۰.۴ مشکل صدا پیدا کردم . خیلی دنبال راه حل سرچیدم بعد از مدت ها حل شد .
فهمیدم pulse audio باگ داره . حالا اگه می خواید راه منم یه تست کنید . مشکل من که با این کار حل شد .
You can fix the problem by removing PulseAudio.
First, make sure that these packages are installed:
gstreamer0.10-alsa
gnome-alsamixer
Then remove the following packages:
gstreamer0.10-pulseaudio
vlc-plugin-pulse
pulseaudio
(This will remove some other packages as well, including ubuntu-desktop. Don't worry about that, it's just an empty metapackage. You can undo all the changes later by reinstalling ubuntu-desktop.)
Open a terminal window and enter the following command:
gstreamer-properties
This will open the GStreamer configuration panel. On the audio tab, select the ALSA plugin for both output and input, then close the window.