Ubuntu Tip: Turning PulseAudio On and Off
Overlapping Controls and ConfusionPulseAudio was supposed to cure desktop audio in Linux. It promised useful features like device routing and individual volume controls. It may well do these things; in my experience it has been frustrating, opaque, and unreliable.
Some have claimed that Ubuntu's implementation is flawed; I haven't looked at other distros yet, so I don't know. On my Ubuntu 10.04 system there are five separate sound control panels lurking in various locations, four PulseAudio and one Gnome:
- System > Preferences > Sound is the Gnome sound control panel
- System > Preferences > PulseAudio Preferences (paprefs)
- Then there is Applications > Sound and Video > PulseAudio Device Chooser (padevchooser)
- and Applications > Sound and Video > PulseAudio Volume Control (pavucontrol), which looks a lot like Sound
- paman, the Pulse Audio Manager, has no graphical launcher. This is supposed to "view and control internals of the sound server", but it doesn't do much of anything
There is supposed to be a way to stop and start the PulseAudio daemon from one of these graphical control panels. On my Lucid Lynx box, there is not. PulseAudio.org is a mess and not very helpful for users; Trac is not good for user documentation as it mixes Trac documentation with the project documentation, and it's crazy confusing.
So I Web-searched, and studied man pages, and manually searched system startup files, and finally figured out how to turn Pulse on and off so it would run when I wanted it to. Hey, why not make it excruciatingly difficult? We users can't be trusted with such serious deep knowledge. So I will pretend you are not reading this, if you will pretend I did not write it.
Solid state disks (SSDs) made a splash in consumer technology, and now the technology has its eyes on the enterprise storage market. Download this eBook to see what SSDs can do for your infrastructure and review the pros and cons of this potentially game-changing storage technology.