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On Thursday, 24 March 2022 22:04:48 GMT Mark Knecht wrote: |
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> On Thu, Mar 24, 2022 at 2:35 AM Peter Humphrey <peter@××××××××××××.uk> |
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> wrote: <SNIP> |
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> |
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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 |
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> > on and off, and assign the kind of output I want from them. I do that, |
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> > and using 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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> |
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> Sorry, if that was actually in the original post I just didn't understand. |
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> |
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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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> |
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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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> |
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> Good luck getting this solved. Weird stuff. |
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> |
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> Mark |
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|
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I usually troubleshoot such problems as Peter has, by creating a vanilla user |
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account to compare settings against my normal user. Using diff between the two |
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accounts ~/.pulse files tends to reveal anything lurking in the undergrowth. |
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'pactl stat' may also reveal any user differences. |
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|
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Another thought, it may worth checking group membership, audio and plugdev/ |
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usb(?), are the same for all users. I mention this, because some recent |
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update had me adding a user to the usb group to be able to use a USB scanner, |
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which for many years had worked fine with plugdev membership only. |
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