le serveur jack ne fonctionne pas ou ne peut pas être démarré

J’obtiens l’erreur suivante en essayant d’utiliser pyaudio en python.

Python 2.7.10 (default, Oct 14 2015, 16:09:02) [GCC 5.2.1 20151010] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import pyaudio >>> p = pyaudio.PyAudio() ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started

Il semble que le problème soit spécifique à une version de pyaudio, alors essayez de le mettre à jour. Lorsque j’essaie de mettre à jour pyaudio:

 abhishek@vaio:/etc/apt/sources.list.d$ sudo pip install pyaudio --upgrade The directory '/home/abhishek/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/home/abhishek/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Collecting pyaudio Downloading PyAudio-0.2.9.tar.gz (289kB) 100% |████████████████████████████████| 296kB 539kB/s Installing collected packages: pyaudio Found existing installation: PyAudio 0.2.8 DEPRECATION: Uninstalling a distutils installed project (pyaudio) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project. Uninstalling PyAudio-0.2.8: Successfully uninstalled PyAudio-0.2.8 Running setup.py install for pyaudio ... error Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-15VuRi/pyaudio/setup.py';exec(comstack(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-QGLaRp-record/install-record.txt --single-version-externally-managed --comstack: running install running build running build_py creating build creating build/lib.linux-x86_64-2.7 copying src/pyaudio.py -> build/lib.linux-x86_64-2.7 running build_ext building '_portaudio' extension creating build/temp.linux-x86_64-2.7 creating build/temp.linux-x86_64-2.7/src x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wssortingct-prototypes -fno-ssortingct-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/_portaudiomodule.c -o build/temp.linux-x86_64-2.7/src/_portaudiomodule.o src/_portaudiomodule.c:28:20: fatal error: Python.h: No such file or directory compilation terminated. error: command 'x86_64-linux-gnu-gcc' failed with exit status 1 ---------------------------------------- Rolling back uninstall of PyAudio Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-15VuRi/pyaudio/setup.py';exec(comstack(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-QGLaRp-record/install-record.txt --single-version-externally-managed --comstack" failed with error code 1 in /tmp/pip-build-15VuRi/pyaudio/

Aucun de ces messages n’est une erreur réelle. PortAudio ne fait que “pings” toutes les API et tous les périphériques hôte possibles et les regarde s’ils sont disponibles ou non. Cela conduit généralement à quelques messages sur le terminal, qui peuvent être ignorés dans la plupart des cas.

Si vous souhaitez un wrapper Python PortAudio qui n’imprime pas ces messages (car il les supprime pour vous), consultez le module sounddevice .