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apport-collect 1817912

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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: bionic

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https://bugs.launchpad.net/bugs/1817912

Title:
  alsa-util.c: Function snd_pcm_avail() returns a value that is
  extraordinarily large: 370196 bytes (2098 мс).

Status in alsa-driver package in Ubuntu:
  New
Status in alsa-utils package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  An old issue with ALSA is still present in Ubuntu 16.04.5.
  The system became extraordinarily slow and hangs at total in around a minute 
while playing a music (around a few hours in my case).

  [15:38:51]
  [root@ThinkPad/var/log]#grep "alsa-sink-CX20751/2 Analog" syslog
  Feb 27 14:58:50 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Function snd_pcm_avail() returns a value that is extraordinarily 
large: 370196 bytes (2098 мс).
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Most likely this is a bug in the ALSA driver «snd_hda_intel». 
Please report this issue to the ALSA developers.
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: snd_pcm_dump():
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Soft volume PCM
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Control: PCM Playback Volume
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: min_dB: -51
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: max_dB: 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: resolution: 256
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Its setup is:
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   stream       : PLAYBACK
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   access       : MMAP_INTERLEAVED
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   format       : S16_LE
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   subformat    : STD
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   channels     : 2
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   rate         : 44100
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   exact rate   : 44100 (44100/1)
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   msbits       : 16
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   buffer_size  : 16384
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_size  : 8192
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_time  : 185759
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   tstamp_mode  : ENABLE
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   tstamp_type  : MONOTONIC
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_step  : 1
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   avail_min    : 15680
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_event : 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   start_threshold  : -1
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   stop_threshold   : 4611686018427387904
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   silence_threshold: 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   silence_size : 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   boundary     : 4611686018427387904
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Slave: Hardware PCM card 1 'HDA Intel PCH' device 0 subdevice 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c: Its setup is:
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   stream       : PLAYBACK
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   access       : MMAP_INTERLEAVED
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   format       : S16_LE
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   subformat    : STD
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   channels     : 2
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   rate         : 44100
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   exact rate   : 44100 (44100/1)
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   msbits       : 16
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   buffer_size  : 16384
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_size  : 8192
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_time  : 185759
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   tstamp_mode  : ENABLE
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   tstamp_type  : MONOTONIC
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_step  : 1
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   avail_min    : 15680
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   period_event : 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   start_threshold  : -1
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   stop_threshold   : 4611686018427387904
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   silence_threshold: 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   silence_size : 0
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   boundary     : 4611686018427387904
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   appl_ptr     : 709483539
  Feb 27 14:58:51 ThinkPad pulseaudio[9613]: [alsa-sink-CX20751/2 Analog] 
alsa-util.c:   hw_ptr       : 709559704

  [15:39:03]
  [root@ThinkPad/var/log]#uname -a
  Linux ThinkPad 4.15.0-45-generic #48~16.04.1-Ubuntu SMP Tue Jan 29 18:03:48 
UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

  [15:40:01]
  [root@ThinkPad/var/log]#cat /proc/asound/version
  Advanced Linux Sound Architecture Driver Version k4.15.0-45-generic.

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