The audio simply disappeared, because the sound card, when the voltage was
reduced, reset, causing the kernel to recognize it as card 0 or card 1,
different from the settings. Then the sound was gone.
After testing the input source, the voltage of 3.3 V and 5 V was below normal
(around 3.28 V and 5.08 V) causing the card to not work properly. After
repairing the power supply, the voltage of 3.3 V and 5 V is around 3.32 V and
5.13 V. On the outside, the power supply appears to be of good quality, but
inside it has few output capacitors.
** Changed in: alsa-driver (Ubuntu)
Status: New => Opinion
** Changed in: alsa-driver (Ubuntu)
Status: Opinion => Invalid
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1884255
Title:
[AMD/ATI] SBx00 Azalia (Intel HDA) Audio Ubuntu 20.04 not working
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