New answers tagged alsa
According to your description your soundcard output seems to be overdriven. Maybe this is the first thing you've checked, but does your output volume in pavucontrol exceed 100%?
This may not be your issue, but never rule out a coincidental hardware issue. Reseat all connections to do with your sound including the card (if you have one). Test your speakers somewhere else to ensure they work.
If you do not want to use the HDMI output as the default output device, and if are using PulseAudio, select the "PCH" card as the default card in PulseAudio. For pure ALSA applications, add the following to /etc/asound.conf or your ~/.asoundrc: defaults.ctl.card PCH defaults.pcm.card PCH
I have a System, where i have default mother-board sound card + WebCAM sound card + external USB sound card = Total 3 sound card. Now i want to mute/unmute specific sound card out of 3, in that case i can do it using following method: show me all the card in the system $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], ...
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