The newly ordered batch of Dell Vostro 1014 Laptops have a ALSA sound problem. When you plugin the headphone, sound plays both on headphone and internal speakers as well.The solution seems either to upgrade ALSA which time consuming and painful. Or pass the correct model name by adding options snd-hda-intel model=dell-bios to /etc/modprobe.d/alsa-base.conf.
For now I settled for simple workaround (that is easy for blind users). Created two shortcut keys to enable and disable headphones with gnome keyboard shortcuts.
Name: Enable Headphones
Command: amixer sset Master frontleft mute
Name: Disable Headphones
Command: amixer sset Master frontleft unmute
The downside of this workaround is that you hear only single channel sound on headphones. If you managed to fix this problem on Ubuntu Jaunty, leave a comment.
I found that on my install (karmic) I could use the following command (bound to a keyboard shortcut:
ReplyDeleteamixer sset Speaker 0
amixer sset Speaker 100
the command you typed also mutes the headphones on mine whereas the two above commands do not affect headphones at all.
Hope this helps
Mat, don't think that all machines have audio control named 'Speaker'
ReplyDeleteOn my laptop I get the following error.
$ amixer sset Speaker 0
amixer: Unable to find simple control 'Speaker',0
Please do have a look at the new solution for Ubuntu Lucid in this post