[alsa-devel] Bug message caught in syslog

[Pavel Řezníček]

Dear developers,

I'm sorry if I write to the wrong list but I just catched several log 
messages that I was advised to report as a bug to you, the ALSA developers.

I'm not experiencing any sound problems by ear, just found these 
messages in the syslog (via logcheck).

Ran the alsa-info_alsa-info.sh shell script and its output can be found 
here:

http://www.alsa-project.org/db/?f=d9b579a048b94cdc71e619c4deac60e4c8228dbb

The log messages in question read as follows:

Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: snd_pcm_avail() navrátil hodnotu, která je nezvykle vysoká: 570108 bajtů (3231 ms).
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: S největší pravděpodobností se jedná o chybu v ovladači ALSA "snd_hda_intel". Nahlaste prosím tento problém vývojářům ALSA.
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: snd_pcm_dump():
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Soft volume PCM
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Control: PCM Playback Volume
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: min_dB: -51
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: max_dB: 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: resolution: 256
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Its setup is:
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stream       : PLAYBACK
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   access       : MMAP_INTERLEAVED
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   format       : S16_LE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   subformat    : STD
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   channels     : 2
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   rate         : 44100
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   exact rate   : 44100 (44100/1)
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   msbits       : 16
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   buffer_size  : 16384
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_size  : 8192
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_time  : 185759
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_mode  : ENABLE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_type  : MONOTONIC
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_step  : 1
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   avail_min    : 15802
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_event : 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   start_threshold  : -1
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stop_threshold   : 4611686018427387904
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_threshold: 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_size : 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   boundary     : 4611686018427387904
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel PCH' device 0 subdevice 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Its setup is:
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stream       : PLAYBACK
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   access       : MMAP_INTERLEAVED
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   format       : S16_LE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   subformat    : STD
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   channels     : 2
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   rate         : 44100
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   exact rate   : 44100 (44100/1)
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   msbits       : 16
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   buffer_size  : 16384
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_size  : 8192
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_time  : 185759
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_mode  : ENABLE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_type  : MONOTONIC
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_step  : 1
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   avail_min    : 15802
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_event : 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   start_threshold  : -1
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stop_threshold   : 4611686018427387904
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_threshold: 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_size : 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   boundary     : 4611686018427387904
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   appl_ptr     : 95068169
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   hw_ptr       : 95194312
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: snd_pcm_delay() navrátil hodnotu, která je nezvykle vysoká: -454064 bajtů (-2574 ms).
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: S největší pravděpodobností se jedná o chybu v ovladači ALSA "snd_hda_intel". Nahlaste prosím tento problém vývojářům ALSA.
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: snd_pcm_dump():
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Soft volume PCM
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Control: PCM Playback Volume
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: min_dB: -51
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: max_dB: 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: resolution: 256
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Its setup is:
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stream       : PLAYBACK
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   access       : MMAP_INTERLEAVED
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   format       : S16_LE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   subformat    : STD
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   channels     : 2
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   rate         : 44100
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   exact rate   : 44100 (44100/1)
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   msbits       : 16
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   buffer_size  : 16384
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_size  : 8192
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_time  : 185759
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_mode  : ENABLE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_type  : MONOTONIC
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_step  : 1
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   avail_min    : 15802
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_event : 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   start_threshold  : -1
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stop_threshold   : 4611686018427387904
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_threshold: 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_size : 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   boundary     : 4611686018427387904
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel PCH' device 0 subdevice 0
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c: Its setup is:
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stream       : PLAYBACK
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   access       : MMAP_INTERLEAVED
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   format       : S16_LE
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   subformat    : STD
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   channels     : 2
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   rate         : 44100
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   exact rate   : 44100 (44100/1)
Jan 24 07:01:25 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   msbits       : 16
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   buffer_size  : 16384
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_size  : 8192
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_time  : 185759
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_mode  : ENABLE
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   tstamp_type  : MONOTONIC
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_step  : 1
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   avail_min    : 15802
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   period_event : 0
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   start_threshold  : -1
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   stop_threshold   : 4611686018427387904
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_threshold: 0
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   silence_size : 0
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   boundary     : 4611686018427387904
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   appl_ptr     : 95099921
Jan 24 07:01:26 ideapad-310 pulseaudio[2724]: [alsa-sink-CX20751/2 Analog] alsa-util.c:   hw_ptr       : 95213480

I'd be happy to help you solving this issue if not known already. Please 
feel free to ask for whatever information you'd need.

Pavel Řezníček A. K. A. Cigydd