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[ubuntu] Could not open audio device for playback
https://ubuntuforums.org/showthread.php?t=800242#:~:text=Re%3A%20Could%20not%20open%20audio%20device%20for%20playback,Ctrl-Alt-F1%20and%20login%20to%20a%20terminal.%20Then%20type%3A
[ubuntu] Could not open audio device for playback
https://ubuntuforums.org/showthread.php?t=800242
392 Re: Could not open audio device for playback 1. You cannot kill zombie processes with the kill command. That is why they are called "zombie" 2. You should only get zombie processes if the parent process is behaving badly or if you have killed init. To kill zombie processes, you may want to kill their parent processes and let init kill them. 3.
[ubuntu] Could not open audio device for playback …
https://ubuntuforums.org/archive/index.php/t-800242.html
udiotestsrc wave=sine freq=512 ! audioconvert ! audioresample ! gconfaudiosink profile=music: Could not open audio device for playback. Device is being used by another application. I've got the same problem. And there is nothing in list of devices, so i can't even choose one. my /etc/modprobe.d/sound contains: alias snd-card-0 snd-emu10k1 options snd …
qt - (PySide2+anaconda) playing audio via QMediaPlayer ...
https://stackoverflow.com/questions/67465088/pyside2anaconda-playing-audio-via-qmediaplayer-warning-could-not-open-audi
player.setMedia (url) The warning Warning: "Could not open audio device for playback." gets printed on the terminal. No sound comes out although the URL is correct and other applications are able to play. Crucially, loading the Official Media Player Qt Example via C++ QTCreator with the same qt5 version works.
sound - PulseAudio not detecting any devices - Ask Ubuntu
https://askubuntu.com/questions/859773/pulseaudio-not-detecting-any-devices
Open any audio player and play a song or something. You'll not hear any sound, and if you press your volume keys, you'd still see the "Dummy" control output. Go to Sound settings: Settings > Sound; In the output section, you'll see "Dummy" selected as default output. Now clicking on the dropdown menu will give the option of "Speakers - Built-in-Audio".
Sound not working HDA-Intel Ubuntu 14.04 - Ask Ubuntu
https://askubuntu.com/questions/515656/sound-not-working-hda-intel-ubuntu-14-04
Do you have only hdmi output(audio from display port) ? The problem could be ( if you have windows8 dual boot ) the main sound device is frozen . Then you have to shutdown computer from windows8, rebooting is not enough.If still not ok, try to post alsa info result: wiki.ubuntu.com/Audio/AlsaInfo –
ubuntu 12.04 - App using GStreamer doesn't work when ...
https://stackoverflow.com/questions/18149280/app-using-gstreamer-doesnt-work-when-another-app-is-using-alsa
Error received from element autoaudiosink-actual-sink-alsa: Could not open audio device for playback. Device is being used by another application. Debugging information: gstalsasink.c(689): gst_alsasink_open (): /GstAlsaSink:autoaudiosink-actual …
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