On Mon, 13 Jun 2022 00:10:14 +0100 Dave Howorth wrote:

On Sun, 12 Jun 2022 17:30:15 -0400 bent fender wrote:

...

Over 30 years of computing and it's in Leap-15.3 that for a first time I see something done the right way: with a guitar fx-board output plugged into my soundcard's 1/4" Line-In jack I can actually HEAR it *even before logging-in* (pulse is used). Interestingly enough this feature is not there in bleeding-edge Tumbleweed :-)))

QUESTION: Is it detactable if some instrument is actually plugged into the sound card? If it is then this is the way to go, I mean if I plug something in it's because I want to hear it and it should be default, no? Would be nice to see this in TW as well all the same, even if it's an unintended bug!

If you think about it for a microsecond, you'll see the answer is 'yes'. If you want to convince yourself, then journalctl -f and then plug whatever it is in.

Beyond that of course there are thousands of possible scenarios ranging from the one you describe through various muti-user possibilities to evil hackers trying to exploit some bug, so it's not immediately obvious to me that your suggestion is the right one in all cases.

I'll presume then that it ios NOT a bug and that it was intended to operate that way in Leap-15.3. In that case how can I set TW up in a way to duplicate the behavior? One of the reasons I run either Leap OR tw (or Artix OR Devuan OR Slackware) is that if some studio stuff fails then I just reboot to something else and try again. With the Leap-15.3 arrangement I can play my guitar and hear it while listening to a backing track set to repeat endlessly in VLC. The alternative is to start jack and Audacity and begin a recording session but pause it, giving me the guitar input monitoring. To listen to a repeating backing track as well I have to first set VLC audio to jack and then load the track into VLC. This alternative way comprises about a dozen traps for failure and just doesn't come together half of the time, not to mention the time it takes to set up. There is supposedly a way to make VLC audio work with jack seamlessly with VLC audio set to auto, but I have never been able to make it work (and that's only a small part of a very weak chain).