Comment 5 for bug 416190
Revision history for this message
| Joel Ebel (jbebel) wrote Re: Pulseaudio produces overdriven audio on Plantronics DA40 adapter | #5 |
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0e1f616
(Get the code!)
I spoke too soon. This is NOT fixed in Karmic or Lucid. Yesterday I was testing with a file that didn't use maximum amplitude. Once I tested with my favorite overdriven audio (Eagles Greatest Hits), I reproduced the overdriven sound on both Karmic and Lucid. Turning down the application specific volume to about 70% in Pulseaudio removed the overdriven sound. I've reproduced this with multiple computers and multiple DA40 adapters. Turning down the ALSA mixer levels or the master pulseaudio volume reduces the volume, but not the distortion.
I'm still surprised that the master pulseaudio volume control doesn't control the ALSA volume with the DA40 adapter under Lucid. It does in Karmic, and it does for the internal sound card under Lucid.
We use the DA40 adapter pretty heavily, so it would be nice for it to work well without having to reduce the per-application volume for every application. Having it default to an appropriate level would be a reasonable workaround, but I'm not aware of a way to do that in user configuration.