On Thursday, 24 March 2022 22:04:48 GMT Mark Knecht wrote: > On Thu, Mar 24, 2022 at 2:35 AM Peter Humphrey <pe...@prh.myzen.co.uk> > wrote: <SNIP> > > > > System Settings -> Audio > > > > > > should show your playback devices. Possibly the setting got switched to > > > an HDMI output on your video card or to the chipset sound device > > > and isn't USB at the moment? > > > > As I said, I do see all three sound devices there. I can switch them each > > on and off, and assign the kind of output I want from them. I do that, > > and using the Test buttons I hear nothing. > > > > -- > > Regards, > > Peter. > > Sorry, if that was actually in the original post I just didn't understand. > > Jack's response to you was more complete and duplicates my thinking > about how to approach debugging. > > To answer one of your earlier questions, but I doubt it applies in the > case of a simple USB sound device, it is possible for other programs > to program certain sound cards in ways that Alsa & pulseaudio would > not know about. I've used an RME HDSP9652 studio sound card > for about 15 years. It has 52 inputs, 52 outputs and lots of internal > hardware routing that general Linux sound doesn't know about and > cannot control. It's configured using two apps (hdspconf and > hdspmixer) to do a lot of special things that are recording studio > specific. At times I've misused these programs and had a lot of > mysterious problems. That said I think it's very unlikely anything > like this applies in your case, but technically it's possible. > > Good luck getting this solved. Weird stuff. > > Mark
I usually troubleshoot such problems as Peter has, by creating a vanilla user account to compare settings against my normal user. Using diff between the two accounts ~/.pulse files tends to reveal anything lurking in the undergrowth. 'pactl stat' may also reveal any user differences. Another thought, it may worth checking group membership, audio and plugdev/ usb(?), are the same for all users. I mention this, because some recent update had me adding a user to the usb group to be able to use a USB scanner, which for many years had worked fine with plugdev membership only.
signature.asc
Description: This is a digitally signed message part.
