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alsa-driver package

After having fron 18.4 to 20.04 I have not sound any more: device output is "dummy output"

Asked by MARLIER Didier

I upgraded fron 18.04 to 20.04.1. I hear no sound even il I can see the wave in "Audacity". In setting the device output is: "dummy output."

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Ubuntu alsa-driver Edit question
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Solved by:
Manfred Hampl
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Manfred Hampl (m-hampl) said : 		#1

For diagnostic purposes please follow https://help.ubuntu.com/community/SoundTroubleshootingProcedure

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MARLIER Didier (didier-l) said : 		#2

Thank you for your answer. I have to say that I am a little lazy and I reinstall my system with a DVD (I could restore my dates).
I think that a file could'nt be written by the upgrade. After the disk install the intern device can be used.

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Best Manfred Hampl (m-hampl) said : 		#3

If you have found a way to resolve the problem, then please set the status of this question document to "solved".

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MARLIER Didier (didier-l) said : 		#4

Thanks Manfred Hampl, that solved my question.