> > Working with a Raspberry Pi B+ with Hifiberry DAC+ on a fresh Raspbian install. > > I can't seem to get Pulseaudio to use the Hifiberry to play an incoming stream. When I run pulseaudio -v, among other things, I see the following: > > CODE: SELECT ALL > SNDRV_PCM_IOCTL_START failed (-77) -77 is EBADFD This mean PCM stream is already running but pulsesudio still call snd_pcm_start ? Need verbose pulseaudio log pulseaudio -vvvv Pulseaudio module-alsa-sink should not use "default" device , seem you have changed <a href="http://default.pa">default.pa</a> argument: ""). > I: [pulseaudio] alsa-sink.c: Successfully opened device default. > I: [pulseaudio] alsa-sink.c: Device doesn't support mmap(), falling back to UNIX read/write mode. > I: [pulseaudio] alsa-sink.c: Cannot enable timer-based scheduling, falling back to sound IRQ scheduling. > I: [pulseaudio] sink.c: Created sink 0 "alsa_output.default" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right > I: [pulseaudio] sink.c: alsa.resolution_bits = "16" > I: [pulseaudio] sink.c: device.api = "alsa" > I: [pulseaudio] sink.c: device.class = "sound" > I: [pulseaudio] sink.c: alsa.class = "generic" > I: [pulseaudio] sink.c: alsa.subclass = "generic-mix" > I: [pulseaudio] sink.c: <a href="http://alsa.name">alsa.name</a> = "" > I: [pulseaudio] sink.c: <a href="http://alsa.id">alsa.id</a> = "HiFiBerry DAC+ HiFi pcm512x-hifi-0" > I: [pulseaudio] sink.c: alsa.subdevice = "0" > I: [pulseaudio] sink.c: alsa.subdevice_name = "subdevice #0" > I: [pulseaudio] sink.c: alsa.device = "0" > I: [pulseaudio] sink.c: alsa.card = "0" > I: [pulseaudio] sink.c: alsa.card_name = "snd_rpi_hifiberry_dacplus" > I: [pulseaudio] sink.c: alsa.long_card_name = "snd_rpi_hifiberry_dacplus" > I: [pulseaudio] sink.c: alsa.driver_name = "snd_soc_hifiberry_dacplus" > I: [pulseaudio] sink.c: device.bus_path = "platform-sound" > I: [pulseaudio] sink.c: sysfs.path = "/devices/sound/sound/card0" > I: [pulseaudio] sink.c: device.string = "default" > I: [pulseaudio] sink.c: device.buffering.buffer_size = "17632" > I: [pulseaudio] sink.c: device.buffering.fragment_size = "4408" > I: [pulseaudio] sink.c: device.access_mode = "serial" > I: [pulseaudio] sink.c: device.description = "snd_rpi_hifiberry_dacplus" > I: [pulseaudio] sink.c: device.icon_name = "audio-card" > I: [pulseaudio] source.c: Created source 0 "alsa_output.default.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right > I: [pulseaudio] source.c: device.description = "Monitor of snd_rpi_hifiberry_dacplus" > I: [pulseaudio] source.c: device.class = "monitor" > I: [pulseaudio] source.c: device.icon_name = "audio-input-microphone" > I: [pulseaudio] alsa-sink.c: Using 4.0 fragments of size 4408 bytes (24.99ms), buffer size is 17632 bytes (99.95ms) > I: [alsa-sink] core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5. > I: [alsa-sink] alsa-sink.c: Starting playback. > I: [alsa-sink] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_START failed (-77) > I: [pulseaudio] module.c: Loaded "module-alsa-sink" (index: #4; argument: ""). > I: [pulseaudio] module-udev-detect.c: Found 1 cards. > I: [pulseaudio] module.c: Loaded "module-udev-detect" (index: #5; argument: ""). > I: [pulseaudio] module.c: Loaded "module-native-protocol-unix" (index: #6; argument: ""). > I: [pulseaudio] module-default-device-restore.c: Restored default sink 'alsa_output.default'. > I: [pulseaudio] module-default-device-restore.c: Restored default source 'alsa_output.default.monitor'. > I: [pulseaudio] module.c: Loaded "module-default-device-restore" (index: #7; argument: ""). > I: [pulseaudio] module.c: Loaded "module-rescue-streams" (index: #8; argument: ""). > I: [pulseaudio] module.c: Loaded "module-always-sink" (index: #9; argument: ""). > I: [pulseaudio] module.c: Loaded "module-intended-roles" (index: #10; argument: ""). > I: [pulseaudio] module.c: Loaded "module-suspend-on-idle" (index: #11; argument: ""). > I: [pulseaudio] module.c: Loaded "module-console-kit" (index: #12; argument: ""). > I: [pulseaudio] module.c: Loaded "module-systemd-login" (index: #13; argument: ""). > I: [pulseaudio] module.c: Loaded "module-position-event-sounds" (index: #14; argument: ""). > I: [pulseaudio] module.c: Loaded "module-role-cork" (index: #15; argument: ""). > I: [pulseaudio] module.c: Loaded "module-filter-heuristics" (index: #16; argument: ""). > I: [pulseaudio] module.c: Loaded "module-filter-apply" (index: #17; argument: ""). > I: [pulseaudio] module.c: Loaded "module-dbus-protocol" (index: #18; argument: ""). > I: [pulseaudio] module.c: Loaded "module-switch-on-port-available" (index: #19; argument: ""). > I: [pulseaudio] module.c: Loaded "module-rtp-recv" (index: #20; argument: ""). > W: [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 > W: [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 > I: [pulseaudio] main.c: Daemon startup complete. > I: [pulseaudio] resampler.c: Using resampler 'speex-fixed-3' > I: [pulseaudio] resampler.c: Using s16le as working format. > I: [pulseaudio] resampler.c: Choosing speex quality setting 3. > I: [pulseaudio] sink-input.c: Created input 0 "RTP Stream (PulseAudio RTP Stream on linuxbox)" on alsa_output.default with sample spec s16be 2ch 48000Hz and channel map front-left,front-right > I: [pulseaudio] sink-input.c: media.role = "stream" > I: [pulseaudio] sink-input.c: <a href="http://media.name">media.name</a> = "RTP Stream (PulseAudio RTP Stream on linuxbox)" > I: [pulseaudio] sink-input.c: rtp.session = "PulseAudio RTP Stream on linuxbox" > I: [pulseaudio] sink-input.c: rtp.origin = "MYNAME 3635426253 0 IN IP4 SERVERIP" > I: [pulseaudio] sink-input.c: rtp.payload = "127" > I: [pulseaudio] sink-input.c: <a href="http://module-stream-restore.id">module-stream-restore.id</a> = "sink-input-by-media-role:stream" > I: [pulseaudio] module-rtp-recv.c: New session 'PulseAudio RTP Stream on linuxbox' > >