[pulseaudio-discuss] rewind and underrun issues on start of playback
Baek Chang
baeksan at ccrma.stanford.edu
Sat Apr 30 15:38:34 PDT 2011
Hi,
I'm seeing some issue with underruns/rewinds occurring on the beginning of
every sink input playback.
I see rewind requests on alsa sink of 9600 bytes. The alsa driver is
configured with the following buffer sizes
I: sink.c: device.buffering.buffer_size = "9600"
I: sink.c: device.buffering.fragment_size = "4800"
So it seems like one buffer size is always being rewinded on the beginning
of playback.
Is there a way to prevent these rewinds/underruns when starting playback?
after the stream has started, there is no issue with audio dropouts or
underruns, just on the beginning.
If i log the data that gets sent to alsa, from pulseaudio or in the alsa
driver, i do see the beginning being dropped as well.
please see attached logs using both tshed=0 and tsched=1.
any help with this?
thanks!
I: client.c: Created 0 "Native client (UNIX socket client)"
D: protocol-native.c: Protocol version: remote 19, local 19
I: protocol-native.c: Got credentials: uid=0 gid=0 success=1
D: protocol-native.c: SHM possible: yes
D: protocol-native.c: Negotiated SHM: no
D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4,
prebuf=0, minreq=1 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432,
base=4, prebuf=0, minreq=4 maxrewind=0
I: sink-input.c: Created input 0 "/usr/palm/sounds/notification.wav" on
pcm_output with sample spec s16le 2ch 44100Hz and channel map
front-left,front-right
I: sink-input.c: media.format = "WAV (Microsoft)"
I: sink-input.c: media.name = "/usr/palm/sounds/notification.wav"
I: sink-input.c: application.name = "pacat"
I: sink-input.c: native-protocol.peer = "UNIX socket client"
I: sink-input.c: native-protocol.version = "19"
I: sink-input.c: application.process.id = "4474"
I: sink-input.c: application.process.user = "root"
I: sink-input.c: application.process.host = "PalmDevice"
I: sink-input.c: application.process.binary = "pacat"
I: sink-input.c: application.language = "C"
I: sink-input.c: application.process.machine_id = "PalmDevice"
I: protocol-native.c: Requested tlength=2000.00 ms, minreq=20.00 ms
D: protocol-native.c: Traditional mode enabled, modifying sink usec only for
compat with minreq.
D: memblockq.c: memblockq requested: maxlength=4194304, tlength=352800,
base=4, prebuf=349276, minreq=3528 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=4194304, tlength=352800,
base=4, prebuf=349276, minreq=3528 maxrewind=0
I: protocol-native.c: Final latency 2054.42 ms = 1960.00 ms + 2*20.00 ms +
54.42 ms
D: protocol-native.c: Requesting rewind due to end of underrun.
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9344 bytes.
D: alsa-sink.c: before: 2336
D: alsa-sink.c: after: 2336
D: alsa-sink.c: Rewound 9344 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 9344 bytes on render memblockq.
D: source.c: Processing rewind...
D: protocol-native.c: Underrun on '/usr/palm/sounds/notification.wav', 0
bytes in queue.
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9344 bytes.
D: alsa-sink.c: before: 2336
D: alsa-sink.c: after: 2336
D: alsa-sink.c: Rewound 9344 bytes.
D: sink.c: Processing rewind...
D: source.c: Processing rewind...
D: core.c: Hmm, no streams around, trying to vacuum.
I: sink-input.c: Freeing input 0 "/usr/palm/sounds/notification.wav"
I: client.c: Freed 0 "pacat"
I: protocol-native.c: Connection died.
--
-baeksanchang
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root at PalmDevice:/media/internal# pulseaudio -vvvv
D: core-rtclock.c: Timer slack is set to 50 us.
D: core-util.c: setpriority() worked.
I: core-util.c: Successfully gained nice level -4.
I: main.c: Found user 'pulse' (UID 31) and group 'pulse' (GID 31).
I: main.c: Successfully dropped root privileges.
I: main.c: This is PulseAudio 0.9.22
D: main.c: Compilation host: arm-none-linux-gnueabi
D: main.c: Compilation CFLAGS: -isystem /home/reviewdaemon/projects/nova/oe/BUILD-topaz/staging/arm-none-linux-gnueabi/include -fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2 -fno-strict-aliasing -fno-inline-functions -O3 -g -Wimplicit -O3 -Wall -W -Wextra -pipe -Wno-long-long -Winline -Wvla -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wold-style-definition -Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-aliasing=2 -Wwrite-strings -Wno-unused-parameter -ffast-math -Wp,-D_FORTIFY_SOURCE=2 -fno-common -fdiagnostics-show-option
D: main.c: Running on host: Linux armv7l 2.6.35-palm-tenderloin #98 SMP PREEMPT Sat Apr 30 12:46:55 PDT 2011
D: main.c: Found 2 CPUs.
I: main.c: Page size is 4096 bytes
D: main.c: Compiled with Valgrind support: yes
D: main.c: Running in valgrind mode: no
D: main.c: Running in VM: no
D: main.c: Optimized build: yes
D: main.c: All asserts enabled.
I: main.c: Machine ID is PalmDevice.
I: main.c: Using runtime directory /var/run/pulse.
I: main.c: Using state directory /var/lib/pulse.
I: main.c: Using modules directory /usr/lib/pulse-0.9.22/modules.
I: main.c: Running in system mode: yes
I: main.c: Fresh high-resolution timers available! Bon appetit!
D: memblock.c: Using shared memory pool with 256 slots of size 64.0 KiB each, total size is 16.0 MiB, maximum usable slot size is 65496
I: cpu-arm.c: CPU flags: V7 VFP EDSP NEON VFPV3
D: alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ...
D: alsa-util.c: Managed to open hw:0
I: alsa-util.c: cannot disable ALSA period wakeups
D: alsa-util.c: Maximum hw buffer size is 54 ms
D: alsa-util.c: Set buffer size first (to 88200 samples), period size second (to 88200 samples).
I: alsa-util.c: ALSA period wakeups were not disabled
I: alsa-sink.c: Successfully opened device hw:0.
I: alsa-sink.c: Successfully enabled mmap() mode.
I: alsa-sink.c: Successfully enabled timer-based scheduling mode.
I: sink.c: Created sink 0 "pcm_output" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: sink.c: alsa.resolution_bits = "16"
I: sink.c: device.api = "alsa"
I: sink.c: device.class = "sound"
I: sink.c: alsa.class = "generic"
I: sink.c: alsa.subclass = "generic-mix"
I: sink.c: alsa.name = ""
I: sink.c: alsa.id = "AIF1 wm8994-aif1-0"
I: sink.c: alsa.subdevice = "0"
I: sink.c: alsa.subdevice_name = "subdevice #0"
I: sink.c: alsa.device = "0"
I: sink.c: alsa.card = "0"
I: sink.c: alsa.card_name = "msm-audio"
I: sink.c: alsa.long_card_name = "msm-audio (WM8994)"
I: sink.c: device.string = "hw:0"
I: sink.c: device.buffering.buffer_size = "9600"
I: sink.c: device.buffering.fragment_size = "4800"
I: sink.c: device.access_mode = "mmap+timer"
I: sink.c: device.description = "msm-audio"
I: sink.c: device.icon_name = "audio-card"
I: source.c: Created source 0 "pcm_output.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: source.c: device.description = "Monitor of msm-audio"
I: source.c: device.class = "monitor"
I: source.c: device.icon_name = "audio-input-microphone"
I: alsa-sink.c: Using 2.0 fragments of size 4800 bytes (27.21ms), buffer size is 9600 bytes (54.42ms)
I: alsa-sink.c: Time scheduling watermark is 20.00ms
D: alsa-sink.c: hwbuf_unused=0
D: alsa-sink.c: setting avail_min=1518
D: alsa-util.c: snd_pcm_dump():
D: alsa-util.c: Hardware PCM card 0 'msm-audio' device 0 subdevice 0
D: alsa-util.c: Its setup is:
D: alsa-util.c: stream : PLAYBACK
D: alsa-util.c: access : MMAP_INTERLEAVED
D: alsa-util.c: format : S16_LE
D: alsa-util.c: subformat : STD
D: alsa-util.c: channels : 2
D: alsa-util.c: rate : 44100
D: alsa-util.c: exact rate : 44100 (44100/1)
D: alsa-util.c: msbits : 16
D: alsa-util.c: buffer_size : 2400
D: alsa-util.c: period_size : 1200
D: alsa-util.c: period_time : 27210
D: alsa-util.c: tstamp_mode : ENABLE
D: alsa-util.c: period_step : 1
D: alsa-util.c: avail_min : 1518
D: alsa-util.c: period_event : 0
D: alsa-util.c: start_threshold : -1
D: alsa-util.c: stop_threshold : 1258291200
D: alsa-util.c: silence_threshold: 0
D: alsa-util.c: silence_size : 0
D: alsa-util.c: boundary : 1258291200
D: alsa-util.c: appl_ptr : 0
D: alsa-util.c: hw_ptr : 0
D: alsa-sink.c: Thread starting up
D: core-util.c: SCHED_RR|SCHED_RESET_ON_FORK worked.
I: core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5.
I: alsa-sink.c: Starting playback.
D: alsa-sink.c: Cutting sleep time for the initial iterations by half.
D: alsa-sink.c: Cutting sleep time for the initial iterations by half.
D: alsa-sink.c: Cutting sleep time for the initial iterations by half.
I: module.c: Loaded "module-alsa-sink" (index: #0; argument: "device=hw:0 sink_name=pcm_output fragment_size=4800 fragments=2 mmap=1 tsched=1 channels=2").
D: alsa-sink.c: Wakeup from ALSA!
I: module.c: Loaded "module-native-protocol-unix" (index: #1; argument: "auth-group=jailusers").
I: main.c: Daemon startup complete.
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: ratelimit.c: 28 events suppressed
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
D: alsa-sink.c: Wakeup from ALSA!
I: client.c: Created 0 "Native client (UNIX socket client)"
D: protocol-native.c: Protocol version: remote 19, local 19
I: protocol-native.c: Got credentials: uid=0 gid=0 success=1
D: protocol-native.c: SHM possible: yes
D: protocol-native.c: Negotiated SHM: no
D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
I: sink-input.c: Created input 0 "/usr/palm/sounds/notification.wav" on pcm_output with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: sink-input.c: media.format = "WAV (Microsoft)"
I: sink-input.c: media.name = "/usr/palm/sounds/notification.wav"
I: sink-input.c: application.name = "pacat"
I: sink-input.c: native-protocol.peer = "UNIX socket client"
I: sink-input.c: native-protocol.version = "19"
I: sink-input.c: application.process.id = "4492"
I: sink-input.c: application.process.user = "root"
I: sink-input.c: application.process.host = "PalmDevice"
I: sink-input.c: application.process.binary = "pacat"
I: sink-input.c: application.language = "C"
I: sink-input.c: application.process.machine_id = "PalmDevice"
I: protocol-native.c: Requested tlength=2000.00 ms, minreq=20.00 ms
D: protocol-native.c: Traditional mode enabled, modifying sink usec only for compat with minreq.
D: memblockq.c: memblockq requested: maxlength=4194304, tlength=352800, base=4, prebuf=349276, minreq=3528 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=4194304, tlength=352800, base=4, prebuf=349276, minreq=3528 maxrewind=0
I: protocol-native.c: Final latency 2054.42 ms = 1960.00 ms + 2*20.00 ms + 54.42 ms
D: alsa-sink.c: Latency set to 54.42ms
D: alsa-sink.c: hwbuf_unused=4
D: alsa-sink.c: setting avail_min=1519
D: alsa-sink.c: Requesting rewind due to latency change.
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9344 bytes.
D: alsa-sink.c: before: 2336
D: alsa-sink.c: after: 2336
D: alsa-sink.c: Rewound 9344 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 9344 bytes on render memblockq.
D: source.c: Processing rewind...
D: protocol-native.c: Requesting rewind due to end of underrun.
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9340 bytes.
D: alsa-sink.c: before: 2335
D: alsa-sink.c: after: 2335
D: alsa-sink.c: Rewound 9340 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 9340 bytes on render memblockq.
D: source.c: Processing rewind...
I: alsa-sink.c: Increasing wakeup watermark to 30.00 ms
I: alsa-sink.c: Increasing wakeup watermark to 40.00 ms
D: protocol-native.c: Underrun on '/usr/palm/sounds/notification.wav', 0 bytes in queue.
D: alsa-sink.c: hwbuf_unused=0
D: alsa-sink.c: setting avail_min=636
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9340 bytes.
D: alsa-sink.c: before: 2335
D: alsa-sink.c: after: 2335
D: alsa-sink.c: Rewound 9340 bytes.
D: sink.c: Processing rewind...
D: source.c: Processing rewind...
D: core.c: Hmm, no streams around, trying to vacuum.
I: sink-input.c: Freeing input 0 "/usr/palm/sounds/notification.wav"
I: client.c: Freed 0 "pacat"
I: protocol-native.c: Connection died.
-------------- next part --------------
root at PalmDevice:/media/internal# pulseaudio -vvvv
D: core-rtclock.c: Timer slack is set to 50 us.
D: core-util.c: setpriority() worked.
I: core-util.c: Successfully gained nice level -4.
I: main.c: Found user 'pulse' (UID 31) and group 'pulse' (GID 31).
I: main.c: Successfully dropped root privileges.
I: main.c: This is PulseAudio 0.9.22
D: main.c: Compilation host: arm-none-linux-gnueabi
D: main.c: Compilation CFLAGS: -isystem /home/reviewdaemon/projects/nova/oe/BUILD-topaz/staging/arm-none-linux-gnueabi/include -fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2 -fno-strict-aliasing -fno-inline-functions -O3 -g -Wimplicit -O3 -Wall -W -Wextra -pipe -Wno-long-long -Winline -Wvla -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wold-style-definition -Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-aliasing=2 -Wwrite-strings -Wno-unused-parameter -ffast-math -Wp,-D_FORTIFY_SOURCE=2 -fno-common -fdiagnostics-show-option
D: main.c: Running on host: Linux armv7l 2.6.35-palm-tenderloin #98 SMP PREEMPT Sat Apr 30 12:46:55 PDT 2011
D: main.c: Found 2 CPUs.
I: main.c: Page size is 4096 bytes
D: main.c: Compiled with Valgrind support: yes
D: main.c: Running in valgrind mode: no
D: main.c: Running in VM: no
D: main.c: Optimized build: yes
D: main.c: All asserts enabled.
I: main.c: Machine ID is PalmDevice.
I: main.c: Using runtime directory /var/run/pulse.
I: main.c: Using state directory /var/lib/pulse.
I: main.c: Using modules directory /usr/lib/pulse-0.9.22/modules.
I: main.c: Running in system mode: yes
I: main.c: Fresh high-resolution timers available! Bon appetit!
D: memblock.c: Using shared memory pool with 256 slots of size 64.0 KiB each, total size is 16.0 MiB, maximum usable slot size is 65496
I: cpu-arm.c: CPU flags: V7 VFP EDSP NEON VFPV3
D: alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ...
D: alsa-util.c: Managed to open hw:0
D: alsa-util.c: Maximum hw buffer size is 54 ms
D: alsa-util.c: Set buffer size first (to 2400 samples), period size second (to 1200 samples).
I: alsa-sink.c: Successfully opened device hw:0.
I: alsa-sink.c: Successfully enabled mmap() mode.
I: sink.c: Created sink 0 "pcm_output" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: sink.c: alsa.resolution_bits = "16"
I: sink.c: device.api = "alsa"
I: sink.c: device.class = "sound"
I: sink.c: alsa.class = "generic"
I: sink.c: alsa.subclass = "generic-mix"
I: sink.c: alsa.name = ""
I: sink.c: alsa.id = "AIF1 wm8994-aif1-0"
I: sink.c: alsa.subdevice = "0"
I: sink.c: alsa.subdevice_name = "subdevice #0"
I: sink.c: alsa.device = "0"
I: sink.c: alsa.card = "0"
I: sink.c: alsa.card_name = "msm-audio"
I: sink.c: alsa.long_card_name = "msm-audio (WM8994)"
I: sink.c: device.string = "hw:0"
I: sink.c: device.buffering.buffer_size = "9600"
I: sink.c: device.buffering.fragment_size = "4800"
I: sink.c: device.access_mode = "mmap"
I: sink.c: device.description = "msm-audio"
I: sink.c: device.icon_name = "audio-card"
I: source.c: Created source 0 "pcm_output.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: source.c: device.description = "Monitor of msm-audio"
I: source.c: device.class = "monitor"
I: source.c: device.icon_name = "audio-input-microphone"
I: alsa-sink.c: Using 2.0 fragments of size 4800 bytes (27.21ms), buffer size is 9600 bytes (54.42ms)
D: alsa-sink.c: hwbuf_unused=0
D: alsa-sink.c: setting avail_min=1
D: alsa-util.c: snd_pcm_dump():
D: alsa-util.c: Hardware PCM card 0 'msm-audio' device 0 subdevice 0
D: alsa-util.c: Its setup is:
D: alsa-util.c: stream : PLAYBACK
D: alsa-util.c: access : MMAP_INTERLEAVED
D: alsa-util.c: format : S16_LE
D: alsa-util.c: subformat : STD
D: alsa-util.c: channels : 2
D: alsa-util.c: rate : 44100
D: alsa-util.c: exact rate : 44100 (44100/1)
D: alsa-util.c: msbits : 16
D: alsa-util.c: buffer_size : 2400
D: alsa-util.c: period_size : 1200
D: alsa-util.c: period_time : 27210
D: alsa-util.c: tstamp_mode : ENABLE
D: alsa-util.c: period_step : 1
D: alsa-util.c: avail_min : 1200
D: alsa-util.c: period_event : 1
D: alsa-util.c: start_threshold : -1
D: alsa-util.c: stop_threshold : 1258291200
D: alsa-util.c: silence_threshold: 0
D: alsa-util.c: silence_size : 0
D: alsa-util.c: boundary : 1258291200
D: alsa-util.c: appl_ptr : 0
D: alsa-util.c: hw_ptr : 0
D: alsa-sink.c: Thread starting up
D: core-util.c: SCHED_RR|SCHED_RESET_ON_FORK worked.
I: core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5.
I: alsa-sink.c: Starting playback.
I: module.c: Loaded "module-alsa-sink" (index: #0; argument: "device=hw:0 sink_name=pcm_output fragment_size=4800 fragments=2 mmap=1 tsched=0 channels=2").
I: module.c: Loaded "module-native-protocol-unix" (index: #1; argument: "auth-group=jailusers").
I: main.c: Daemon startup complete.
I: client.c: Created 0 "Native client (UNIX socket client)"
D: protocol-native.c: Protocol version: remote 19, local 19
I: protocol-native.c: Got credentials: uid=0 gid=0 success=1
D: protocol-native.c: SHM possible: yes
D: protocol-native.c: Negotiated SHM: no
D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
I: sink-input.c: Created input 0 "/usr/palm/sounds/notification.wav" on pcm_output with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: sink-input.c: media.format = "WAV (Microsoft)"
I: sink-input.c: media.name = "/usr/palm/sounds/notification.wav"
I: sink-input.c: application.name = "pacat"
I: sink-input.c: native-protocol.peer = "UNIX socket client"
I: sink-input.c: native-protocol.version = "19"
I: sink-input.c: application.process.id = "4474"
I: sink-input.c: application.process.user = "root"
I: sink-input.c: application.process.host = "PalmDevice"
I: sink-input.c: application.process.binary = "pacat"
I: sink-input.c: application.language = "C"
I: sink-input.c: application.process.machine_id = "PalmDevice"
I: protocol-native.c: Requested tlength=2000.00 ms, minreq=20.00 ms
D: protocol-native.c: Traditional mode enabled, modifying sink usec only for compat with minreq.
D: memblockq.c: memblockq requested: maxlength=4194304, tlength=352800, base=4, prebuf=349276, minreq=3528 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=4194304, tlength=352800, base=4, prebuf=349276, minreq=3528 maxrewind=0
I: protocol-native.c: Final latency 2054.42 ms = 1960.00 ms + 2*20.00 ms + 54.42 ms
D: protocol-native.c: Requesting rewind due to end of underrun.
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9344 bytes.
D: alsa-sink.c: before: 2336
D: alsa-sink.c: after: 2336
D: alsa-sink.c: Rewound 9344 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 9344 bytes on render memblockq.
D: source.c: Processing rewind...
D: protocol-native.c: Underrun on '/usr/palm/sounds/notification.wav', 0 bytes in queue.
D: alsa-sink.c: Requested to rewind 9600 bytes.
D: alsa-sink.c: Limited to 9344 bytes.
D: alsa-sink.c: before: 2336
D: alsa-sink.c: after: 2336
D: alsa-sink.c: Rewound 9344 bytes.
D: sink.c: Processing rewind...
D: source.c: Processing rewind...
D: core.c: Hmm, no streams around, trying to vacuum.
I: sink-input.c: Freeing input 0 "/usr/palm/sounds/notification.wav"
I: client.c: Freed 0 "pacat"
I: protocol-native.c: Connection died.
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