Package: plasma-pa Version: 4:5.14.5-1 Severity: normal The speakers test functionality in the settings of the plasmoid didn't work for me. When I tried to use it, I saw the following in the console:
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM 2 ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM 2 ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM 2 After studying the code, I noticed that test sounds are being played with libcanberra, and the device ID is backend-specific there. It seems that the numeric IDs are used by Pulseaudio backend, not ALSA. So, I installed the Pulseaudio backend: $ sudo apt install libcanberra-pulse This fixed the bug for me. So, please add libcanberra-pulse to Recommends of plasma-pa. -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-4-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8), LANGUAGE=ru (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages plasma-pa depends on: ii libc6 2.28-8 ii libcanberra0 0.30-7 ii libkf5coreaddons5 5.54.0-1 ii libkf5globalaccel-bin 5.54.0-1 ii libkf5globalaccel5 5.54.0-1 ii libkf5i18n5 5.54.0-1 ii libkf5quickaddons5 5.54.0-1 ii libpulse-mainloop-glib0 12.2-4 ii libpulse0 12.2-4 ii libqt5core5a 5.11.3+dfsg1-1 ii libqt5dbus5 5.11.3+dfsg1-1 ii libqt5gui5 5.11.3+dfsg1-1 ii libqt5qml5 5.11.3-4 ii libqt5quick5 5.11.3-4 ii libqt5widgets5 5.11.3+dfsg1-1 ii libstdc++6 8.3.0-5 ii plasma-framework 5.54.0-1 ii pulseaudio 12.2-4 ii qml-module-org-kde-draganddrop 5.54.0-1 ii qml-module-org-kde-kquickcontrolsaddons 5.54.0-1 ii qml-module-qtquick-controls 5.11.3-2 ii qml-module-qtquick-layouts 5.11.3-4 ii qml-module-qtquick2 5.11.3-4 plasma-pa recommends no packages. plasma-pa suggests no packages. -- no debconf information