[Pkg-alsa-devel] Bug#973887: alsa-utils: alsamixer default Sound Card hangs (high CPU usage) with `pulseaudio --kill`

[rv]

Package: alsa-utils
Version: 1.2.3-1
Severity: normal
X-Debbugs-Cc: riveravaldezmail at gmail.com

Dear Maintainer,

   * What led up to the situation?

AFAICT, last system update (yesterday).

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

With alsamixer running in a separated terminal [F6: Sound Card : - (default)] I did `pulseaudio --kill`.

   * What was the outcome of this action?

CPU starts to work a lot and non-stoping. Going to alsamixer and doing F6: select another Card (the '0' one, for instance) stops this hang. But then when trying to choose again '- (default)' I have this message:
> Error
> Cannot open mixer device 'default'.
> Connection refused

Which I suppose it's OK since PA is not running.
If I do `pulseaudio --start` and try again alsamixer seems to recover ('default' appears again).

   * What outcome did you expect instead?

Not high-CPU-hanging, I suppose.

Thanks a lot. Best regards.


-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.9.0-1-amd64 (SMP w/4 CPU threads)
Locale: LANG=es_AR.UTF-8, LC_CTYPE=es_AR.UTF-8 (charmap=UTF-8), LANGUAGE=es_AR:es
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages alsa-utils depends on:
ii  kmod              27+20200310-2
ii  libasound2        1.2.3.2-1
ii  libatopology2     1.2.3.2-1
ii  libc6             2.30-8
ii  libfftw3-single3  3.3.8-2
ii  libncursesw6      6.2+20200918-1
ii  libsamplerate0    0.1.9-2
ii  libtinfo6         6.2+20200918-1
ii  lsb-base          11.1.0

alsa-utils recommends no packages.

Versions of packages alsa-utils suggests:
ii  dialog  1.3-20190808-1

-- no debconf information