Manjaro
插孔沒有播放音頻，pulseaudio 一直處於活動狀態
我有兩台電腦，它們的 manjaro 安裝非常相似。兩者都安裝了相同的 jack2、QJackCtl 和核心版本。
電腦 1
這是一個有效的：
我可以啟動插孔並聽到 lmms 和 Hydrogen 中的內容。然後，pulseaudio 的其他音頻輸出將停止，這是預期的 afaik。當在這個 QJackCtl 中停止和啟動 jack 時，它看起來像這樣：
01:01:48.817 Client deactivated. 01:01:48.827 JACK is stopping... Jack main caught signal 15 Released audio card Audio0 audio_reservation_finish 01:01:49.074 JACK was stopped 01:01:51.610 JACK is starting... 01:01:51.611 /usr/bin/jackd -dalsa -dhw:0 -r48000 -p1024 -n2 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 JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock 01:01:51.652 JACK was started with PID=1969. Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user no message buffer overruns Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user no message buffer overruns Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user no message buffer overruns jackdmp 1.9.14 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2016 Grame. Copyright 2016-2019 Filipe Coelho. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 10 self-connect-mode is "Don't restrict self connect requests" Cannot lock down 82280346 byte memory area (Cannot allocate memory) audio_reservation_init Acquire audio card Audio0 creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods ALSA: final selected sample format for capture: 32bit integer little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 2 periods for playback Cannot use real-time scheduling (RR/10) (1: Operation not permitted) AcquireSelfRealTime error 01:01:53.832 JACK connection change. 01:01:53.834 Server configuration saved to "/home/mango/.jackdrc". 01:01:53.835 Statistics reset. 01:01:53.866 Client activated. 01:01:53.867 Patchbay deactivated. 01:01:53.882 JACK connection graph change. Cannot lock down 82280346 byte memory area (Cannot allocate memory)電腦 2
在這一點上，所有的 pulseaudio 應用程序都會繼續播放聲音，lmms 和 Hydrogen 不會。在 QJackCtl 中停止和啟動千斤頂時，我看到的就是：
00:52:35.422 Client deactivated. 00:52:36.599 JACK connection change. 00:52:36.618 Client activated. 00:52:36.619 Patchbay deactivated. Cannot lock down 82280346 byte memory area (Cannot allocate memory)如您所見，它沒有記錄太多內容。
在此處插入
/usr/bin/jackd -dalsa -dhw:0 -r48000 -p1024 -n2來自工作機器的命令會產生：`default' server already active Failed to open server如果我在重新啟動後或使用後直接執行相同的命令
jack_control stop，則會產生：audio_reservation_init Acquire audio card Audio0 creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode Released audio card Audio0 audio_reservation_finish Cannot initialize driver JackServer::Open failed with -1 Failed to open server相同的
jackd -d alsaPCM 錯誤消息未出現在電腦 1 上。
在兩台機器上，QJackCtl 都聲稱 Jack 是“活躍的”
我可以在哪裡繼續尋找問題？
謝謝
根本不播放音頻的解決方案是檢查 QJackCtl 中的輸出設備
Setup...->Settings->Advanced->Output Device並將其設置到我的音效卡。