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On Thu, Mar 24, 2022 at 2:35 AM Peter Humphrey <peter@××××××××××××.uk> wrote: |
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<SNIP> |
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> > System Settings -> Audio |
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> > |
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> > should show your playback devices. Possibly the setting got switched to |
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> > an HDMI output on your video card or to the chipset sound device |
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> > and isn't USB at the moment? |
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> |
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> As I said, I do see all three sound devices there. I can switch them each on |
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> and off, and assign the kind of output I want from them. I do that, and using |
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> the Test buttons I hear nothing. |
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> |
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> -- |
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> Regards, |
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> Peter. |
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Sorry, if that was actually in the original post I just didn't understand. |
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Jack's response to you was more complete and duplicates my thinking |
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about how to approach debugging. |
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To answer one of your earlier questions, but I doubt it applies in the |
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case of a simple USB sound device, it is possible for other programs |
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to program certain sound cards in ways that Alsa & pulseaudio would |
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not know about. I've used an RME HDSP9652 studio sound card |
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for about 15 years. It has 52 inputs, 52 outputs and lots of internal |
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hardware routing that general Linux sound doesn't know about and |
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cannot control. It's configured using two apps (hdspconf and |
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hdspmixer) to do a lot of special things that are recording studio |
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specific. At times I've misused these programs and had a lot of |
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mysterious problems. That said I think it's very unlikely anything |
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like this applies in your case, but technically it's possible. |
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Good luck getting this solved. Weird stuff. |
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Mark |
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