I've done a new install of Ubuntu 9.04 and sound is behaving differently on this machine than it was on my old one. I'm using the same little desktop stereo speakers I did on my old system. We've got voicemails that are automatically e-mailed to an account as .wav files; even with the volume cranked all the way up, they're barely audible. I also noticed that unlike on my other desktop, changing the master volume doesn't seem to do anything. I can change the volume by sliding the PCM and Headphone volume bars, but the master volume bar doesn't seem to do anything. If I listen to something on YouTube, for instance, it's audible but the sound is kind of tinny and distorted. The system uses onboard audio; here's the output of aplay -l.
I've never worked with sound issues on Linux before and I'm afraid I don't know where to begin troubleshooting this problem.**** List of PLAYBACK Hardware Devices ****
card 0: nForce [NVidia nForce], device 0: Intel ICH [NVidia nForce]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: nForce [NVidia nForce], device 2: Intel ICH - IEC958 [NVidia nForce - IEC958]
Subdevices: 1/1
Subdevice #0: subdevice #0
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