[Jackaudio] Querying input ports for 1 input channel card fails (ALSA/USB)

[Kjetil Matheussen]

I can't reproduce the problem with the dummy driver, and my alsa
soundcard won't start if I give "-i 1" option.

On Thu, May 7, 2020 at 10:06 AM Kjetil Matheussen
<k.s.matheussen at gmail.com> wrote:
>
> Hi,
>
> A user reports that Radium prints an error when it tries to connect
> input ports. The user has a USB soundcard with just one input channel.
>
> Here's the code:
> https://github.com/kmatheussen/radium/blob/master/audio/KillJackd.cpp#L128
> (If code has changed, search for "// Connect input ports")
>
> When running the program, the user gets this error message:
>
>     "KillJackd.cpp: Could not connect input port 2"
>
> If there is only one input port, this message should not be printed,
> because portname for port 2 should be NULL. I don't see anything wrong
> with the code... Could it be a bug in Jack?
>
> Full discussion:
> https://users.notam02.no/~kjetism/radium/forum/viewtopic.php?f=7&t=265