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Message #33269
[Bug 1241449] Re: Plantronics GameCom 780 digital output/input missing
commenting out the config line did not resolve the issue for me. The
S/PDIF listing reappears but produces no audio output.
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https://bugs.launchpad.net/bugs/1241449
Title:
Plantronics GameCom 780 digital output/input missing
Status in “alsa-lib” package in Ubuntu:
Confirmed
Bug description:
Under Ubuntu 13.10, the Plantronics GameCom 780 digital output/input
is missing.
Fix: Remove/comment out the Plantronics GameCom entry under USB-
Audio.pcm.iec958_device within /usr/share/alsa/cards/USB-Audio.conf,
reboot the box, and it reappears as a digital device. On my system
it's line 46.
When used as an analogue only device, the volume at 1% is unusably
loud, as such as this device can only be used as a digital device.
There appears to be no fix for the analogue driver, as it is
reportedly a firmware bug, according to a alsa mailing list thread.
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References