私はMIDIデバイスと通信するソフトウェアを受け継いだので、ALSAとpulseaudioの両方が含まれています。最初から構築されたBIシステムには、次のエラーがあります。
No protocol specified
xcb_connection_has_error() returned true
そしてシステムログから：
Aug 24 17:43:29 debianl016 pulseaudio[2206]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Aug 24 17:43:29 debianl016 pulseaudio[2204]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Aug 24 17:43:29 debianl016 rtkit-daemon[1216]: Successfully made thread 2215 of process 2215 (/usr/bin/pulseaudio) owned by '2003' high priority at nice level -11.
Aug 24 17:43:29 debianl016 rtkit-daemon[1216]: Supervising 1 threads of 1 processes of 1 users.
Aug 24 17:43:29 debianl016 pulseaudio[2215]: [pulseaudio] main.c: Daemon startup without any loaded modules, refusing to work.
Aug 24 17:43:29 debianl016 pulseaudio[2206]: [pulseaudio] main.c: Daemon startup failed.
Aug 24 17:43:29 debianl016 rtkit-daemon[1216]: Successfully made thread 2217 of process 2217 (/usr/bin/pulseaudio) owned by '2003' high priority at nice level -11.
Aug 24 17:43:29 debianl016 rtkit-daemon[1216]: Supervising 1 threads of 1 processes of 1 users.
Aug 24 17:43:29 debianl016 pulseaudio[2217]: [pulseaudio] main.c: Daemon startup without any loaded modules, refusing to work.
Aug 24 17:43:29 debianl016 pulseaudio[2204]: [pulseaudio] main.c: Daemon startup failed.
Aug 24 17:43:29 debianl016 kernel: [ 338.958104] usb 1-2.4: USB disconnect, device number 9
Aug 24 17:43:29 debianl016 kernel: [ 339.256760] usb 1-2.4: new full-speed USB device number 12 using xhci_hcd
Aug 24 17:43:30 debianl016 kernel: [ 339.447919] usb 1-2.4: New USB device found, idVendor=04d8, idProduct=0059
Aug 24 17:43:30 debianl016 kernel: [ 339.447939] usb 1-2.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Aug 24 17:43:30 debianl016 kernel: [ 339.447953] usb 1-2.4: Product: Lighted Rockers 01-016
Aug 24 17:43:30 debianl016 kernel: [ 339.447964] usb 1-2.4: Manufacturer:
Aug 24 17:43:30 debianl016 kernel: [ 339.447976] usb 1-2.4: SerialNumber: 01-016
Aug 24 17:43:30 debianl016 mtp-probe: checking bus 1, device 12: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2.4"
Aug 24 17:43:30 debianl016 mtp-probe: bus: 1, device: 12 was not an MTP device
Aug 24 17:46:27 debianl016 systemd-timesyncd[276]: interval/delta/delay/jitter/drift 512s/+0.002s/0.025s/0.005s/+53ppm
Aug 24 17:47:13 debianl016 minissdpd[753]: 1 new devices added
Aug 24 17:47:13 debianl016 minissdpd[753]: 1 new devices added
Aug 24 17:47:13 debianl016 minissdpd[753]: 1 new devices added
Aug 24 17:47:13 debianl016 minissdpd[753]: 1 new devices added
Aug 24 17:51:59 debianl016 pulseaudio[2839]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Aug 24 17:51:59 debianl016 rtkit-daemon[1216]: Successfully made thread 2871 of process 2871 (/usr/bin/pulseaudio) owned by '2003' high priority at nice level -11.
Aug 24 17:51:59 debianl016 rtkit-daemon[1216]: Supervising 1 threads of 1 processes of 1 users.
Aug 24 17:51:59 debianl016 pulseaudio[2871]: [pulseaudio] main.c: Daemon startup without any loaded modules, refusing to work.
Aug 24 17:51:59 debianl016 pulseaudio[2839]: [pulseaudio] main.c: Daemon startup failed.
Aug 24 17:51:59 debianl016 pulseaudio[2870]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Aug 24 17:51:59 debianl016 rtkit-daemon[1216]: Successfully made thread 2874 of process 2874 (/usr/bin/pulseaudio) owned by '2003' high priority at nice level -11.
Aug 24 17:51:59 debianl016 rtkit-daemon[1216]: Supervising 1 threads of 1 processes of 1 users.
Aug 24 17:51:59 debianl016 pulseaudio[2874]: [pulseaudio] main.c: Daemon startup without any loaded modules, refusing to work.
Aug 24 17:51:59 debianl016 pulseaudio[2870]: [pulseaudio] main.c: Daemon startup failed.
また、lightdmを使用してパルスオーディオが正しく設定されている正しいシステムAがあります。システムBはGnomeにあります。どちらもDebian 8 Jessieです。
これらのパルスオーディオ関連のエラーを防ぐために、システムAとB間の関連ファイルを比較する方法は？確認済み：
/etc/pulse/システムAとBは同じです。
編集：pulseaudioを完全に再インストールした後もエラーは続きます。現在のシステムログ：
Aug 24 18:42:26 debianl016 pulseaudio[4461]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Aug 24 18:42:26 debianl016 pulseaudio[4462]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Successfully made thread 4471 of process 4471 (/usr/bin/pulseaudio) owned by '2003' high priority at nice level -11.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Supervising 1 threads of 1 processes of 1 users.
Aug 24 18:42:26 debianl016 pulseaudio[4471]: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
Aug 24 18:42:26 debianl016 pulseaudio[4471]: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="1" name="usb-CLASSIC_ORGAN_WORKS_CLASSIC_Lighted_Rockers_01-016_01-016-00-C01016" card_name="alsa_card.usb-CLASSIC_ORGAN_WORKS_CLASSIC_Lighted_Rockers_01-016_01-016-00-C01016" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1""): initialization failed.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Supervising 1 threads of 1 processes of 1 users.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Successfully made thread 4483 of process 4471 (/usr/bin/pulseaudio) owned by '2003' RT at priority 5.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Supervising 2 threads of 1 processes of 1 users.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Supervising 2 threads of 1 processes of 1 users.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Successfully made thread 4484 of process 4471 (/usr/bin/pulseaudio) owned by '2003' RT at priority 5.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Supervising 3 threads of 1 processes of 1 users.
Aug 24 18:42:26 debianl016 pulseaudio[4471]: [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally with the following error: No protocol specified
Aug 24 18:42:26 debianl016 pulseaudio[4471]: [pulseaudio] server-lookup.c: Autolaunch error: X11 initialization failed.
Aug 24 18:42:26 debianl016 pulseaudio[4471]: [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally with the following error: No protocol specified
Aug 24 18:42:26 debianl016 pulseaudio[4471]: [pulseaudio] main.c: Autolaunch error: X11 initialization failed.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Successfully made thread 4488 of process 4488 (/usr/bin/pulseaudio) owned by '2003' high priority at nice level -11.
Aug 24 18:42:26 debianl016 rtkit-daemon[1216]: Supervising 4 threads of 2 processes of 1 users.
Aug 24 18:42:26 debianl016 pulseaudio[4488]: [pulseaudio] pid.c: Daemon already running.
パルスオーディオ - ダンプモジュール：
module-alsa-card ALSA Card
module-alsa-sink ALSA Sink
module-alsa-source ALSA Source
module-always-sink Always keeps at least one sink loaded even if it's a null one
module-augment-properties Augment the property sets of streams with additional static information
module-card-restore Automatically restore profile of cards
module-cli Command line interface
module-cli-protocol-tcp Command line interface protocol (TCP sockets)
module-cli-protocol-unix Command line interface protocol (UNIX sockets)
module-combine Compatibility module (module-combine rename)
module-combine-sink Combine multiple sinks to one
module-console-kit Create a client for each ConsoleKit session of this user
module-dbus-protocol D-Bus interface
module-default-device-restore Automatically restore the default sink and source
module-detect Detect available audio hardware and load matching drivers
module-device-manager Keep track of devices (and their descriptions) both past and present and prioritise by role
module-device-restore Automatically restore the volume/mute state of devices
module-echo-cancel Echo Cancellation
module-equalizer-sink General Purpose Equalizer
module-esound-sink ESOUND Sink
module-filter-apply Load filter sinks automatically when needed
module-filter-heuristics Detect when various filters are desirable
module-http-protocol-tcp HTTP (TCP sockets)
module-http-protocol-unix HTTP (UNIX sockets)
module-intended-roles Automatically set device of streams based on intended roles of devices
module-ladspa-sink Virtual LADSPA sink
module-loopback Loopback from source to sink
module-match Playback stream expression matching module
module-mmkbd-evdev Multimedia keyboard support via Linux evdev
module-native-protocol-fd Native protocol autospawn helper
module-native-protocol-tcp Native protocol (TCP sockets)
module-native-protocol-unix Native protocol (UNIX sockets)
module-null-sink Clocked NULL sink
module-null-source Clocked NULL source
module-oss OSS Sink/Source
module-pipe-sink UNIX pipe sink
module-pipe-source UNIX pipe source
module-position-event-sounds Position event sounds between L and R depending on the position on screen of the widget triggering them.
module-remap-sink Virtual channel remapping sink
module-remap-source Virtual channel remapping source
module-rescue-streams When a sink/source is removed, try to move its streams to the default sink/source
module-role-cork Mute & cork streams with certain roles while others exist
module-role-ducking Apply a ducking effect based on streams roles
module-rtp-recv Receive data from a network via RTP/SAP/SDP
module-rtp-send Read data from source and send it to the network via RTP/SAP/SDP
module-rygel-media-server UPnP MediaServer Plugin for Rygel
module-simple-protocol-tcp Simple protocol (TCP sockets)
module-simple-protocol-unix Simple protocol (UNIX sockets)
module-sine Sine wave generator
module-sine-source Sine wave generator source
module-stream-restore Automatically restore the volume/mute/device state of streams
module-suspend-on-idle When a sink/source is idle for too long, suspend it
module-switch-on-connect When a sink/source is added, switch to it
module-switch-on-port-available n/a
module-systemd-login Create a client for each login session of this user
module-tunnel-sink Tunnel module for sinks
module-tunnel-sink-new Create a network sink which connects via a stream to a remote PulseAudio server
module-tunnel-source Tunnel module for sources
module-tunnel-source-new Create a network source which connects via a stream to a remote PulseAudio server
module-udev-detect Detect available audio hardware and load matching drivers
module-virtual-sink Virtual sink
module-virtual-source Virtual source
module-virtual-surround-sink Virtual surround sink
module-volume-restore Compatibility module
module-x11-bell X11 bell interceptor
module-x11-cork-request Synthesize X11 media key events when cork/uncork is requested
module-x11-publish X11 credential publisher
module-x11-xsmp X11 session management
プレイ-l：
**** List of PLAYBACK Hardware Devices ****
Failed to create secure directory (/run/user/1000/pulse): Permission denied
card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
kern.log MIDI通信プログラムを再起動します。
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to create secure directory (/run/user/1000/pulse): Permission denied
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to generate socket path.
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to load module "module-cli-protocol-unix" (argument: ""): initialization failed.
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to create secure directory (/run/user/1000/pulse): Permission denied
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to generate socket path.
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to load module "module-cli-protocol-unix" (argument: ""): initialization failed.
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to create secure directory (/run/user/1000/pulse): Permission denied
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to generate socket path.
Aug 25 10:42:43 debianl016 pulseaudio[1584]: Failed to load module "module-cli-protocol-unix" (argument: ""): initialization failed.
Aug 25 10:42:44 debianl016 pulseaudio[1584]: Failed to create secure directory (/run/user/1000/pulse): Permission denied
Aug 25 10:42:44 debianl016 pulseaudio[1584]: Failed to generate socket path.
Aug 25 10:42:44 debianl016 pulseaudio[1584]: Failed to load module "module-cli-protocol-unix" (argument: ""): initialization failed.
Aug 25 10:42:44 debianl016 pulseaudio[1584]: Failed to create secure directory (/run/user/1000/pulse): Permission denied
Aug 25 10:42:44 debianl016 pulseaudio[1584]: Failed to generate socket path.
Aug 25 10:42:44 debianl016 pulseaudio[1584]: Failed to load module "module-cli-protocol-unix" (argument: ""): initialization failed.
Aug 25 10:42:56 debianl016 pulseaudio[1584]: Failed to create secure directory (/run/user/1000/pulse): Permission denied
Aug 25 10:43:00 debianl016 pulseaudio[2110]: Stale PID file, overwriting.
Aug 25 10:43:00 debianl016 pulseaudio[2110]: Failed to find a working profile.
Aug 25 10:43:00 debianl016 pulseaudio[2110]: Failed to load module "module-alsa-card" (argument: "device_id="1" name="usb-CLASSIC_ORGAN_WORKS_CLASSIC_Lighted_Rockers_01-016_01-016-00-C01016" card_name="alsa_card.usb-CLASSIC_ORGAN_WORKS_CLASSIC_Lighted_Rockers_01-016_01-016-00-C01016" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1""): initialization failed.
Aug 25 10:43:00 debianl016 pulseaudio[2110]: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
Aug 25 10:43:00 debianl016 pulseaudio[2110]: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
結論：MIDIプログラムが正しく機能するためには、apt-get purge pulseaudioを使用し、/usr/share/alsaからパルス関連ファイルを削除する必要がありました。 pulseaudioが通信を妨げているようだった。
答え1
通常、システム全体のファイルからインポートされた構成を「上書きし」、default.pa現在のユーザーに属する場所ファイルの空の構成を使用しているようです。このユーザー固有の構成ファイルは、またはdefault.paディレクトリにあります。見つからない場合は、Locate を実行できます。~/.pulse/default.pa~/.config/pulse/default.pa
sudo updatedb
locate default.pa
~/.config/pulse/~/.pulse) directory withすでにユーザー固有のパルス設定を使用していない限り、一時的に「非表示にする」これは、自動的にpulseaudioがデフォルトのシステム全体のプロファイルを使用するように戻します。
また、何らかの理由でシステム全体の/etc/pulse/default.paファイルが破損している場合は、次のコマンドを使用して再インストールできます。
sudo apt-get -o Dpkg::Options::="--force-confask" install --reinstall pulseaudio