This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1817912 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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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