skype talks suddenly went down

Hello,

when talking on skype, it happens regularly (about all two minutes), that I can't hear my partner any more. He does not hear me. Opening Audio- Settings from the symbol in the panel, shows that the microfon is okay, but no application is using it any more. Skype can not be shut down after that, I can't even kill it from the system monitor's process view. A "sudo kill -9" stops the process. After restarting I can talk for about two minutes again. Then, the same thing happens again.

I add two log excerpts to that message. The first one is from a broken-down skype talk, the second one looks similiar (at least, to of the log entries are equal), but occured when I was listening some music. I never encountered any sound problems when not skyping.

syslog looks like so around such an accident (unfortunately, the syslog is german. I don't know who decided to translate log files, but in my experience, it makes debugging harder. It's much easier to decide, whether another problem description fits mine, when the log's language is different, anonymization of the computer's name is my doing):

Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: snd_pcm_avail() gibt einen Wert zurück, der ausserordentlich gross ist: 3528320 bytes (10000 ms).
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Dies ist wahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie dieses Problem den ALSA-Entwicklern.
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: snd_pcm_dump():
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Soft volume PCM
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Control: PCM Playback Volume
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: min_dB: -51
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: max_dB: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: resolution: 256
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Its setup is:
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stream : PLAYBACK
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: access : MMAP_INTERLEAVED
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: format : S16_LE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: subformat : STD
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: channels : 4
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: rate : 44100
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: exact rate : 44100 (44100/1)
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: msbits : 16
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: buffer_size : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_size : 88208
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_time : 2000181
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: tstamp_mode : ENABLE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_step : 1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: avail_min : 440158
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_event : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: start_threshold : -1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stop_threshold : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_threshold: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_size : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: boundary : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel' device 0 subdevice 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Its setup is:
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stream : PLAYBACK
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: access : MMAP_INTERLEAVED
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: format : S16_LE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: subformat : STD
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: channels : 4
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: rate : 44100
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: exact rate : 44100 (44100/1)
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: msbits : 16
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: buffer_size : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_size : 88208
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_time : 2000181
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: tstamp_mode : ENABLE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_step : 1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: avail_min : 440158
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_event : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: start_threshold : -1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stop_threshold : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_threshold: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_size : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: boundary : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: appl_ptr : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: hw_ptr : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: snd_pcm_mmap_begin() gibt einen Wert zurück, der ausserordentlich gross ist: 3528320 bytes (10000 ms).
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Dies ist wahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie dieses Problem den ALSA-Entwicklern.
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: snd_pcm_dump():
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Soft volume PCM
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Control: PCM Playback Volume
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: min_dB: -51
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: max_dB: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: resolution: 256
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Its setup is:
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stream : PLAYBACK
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: access : MMAP_INTERLEAVED
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: format : S16_LE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: subformat : STD
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: channels : 4
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: rate : 44100
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: exact rate : 44100 (44100/1)
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: msbits : 16
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: buffer_size : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_size : 88208
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_time : 2000181
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: tstamp_mode : ENABLE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_step : 1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: avail_min : 440158
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_event : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: start_threshold : -1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stop_threshold : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_threshold: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_size : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: boundary : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel' device 0 subdevice 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Its setup is:
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stream : PLAYBACK
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: access : MMAP_INTERLEAVED
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: format : S16_LE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: subformat : STD
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: channels : 4
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: rate : 44100
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: exact rate : 44100 (44100/1)
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: msbits : 16
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: buffer_size : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_size : 88208
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_time : 2000181
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: tstamp_mode : ENABLE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_step : 1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: avail_min : 440158
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_event : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: start_threshold : -1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stop_threshold : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_threshold: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_size : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: boundary : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: appl_ptr : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: hw_ptr : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: snd_pcm_delay() gibt einen Wert zurück, der ausserordentlich gross ist: 3528320 bytes (10000 ms).
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Dies ist wahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie dieses Problem den ALSA-Entwicklern.
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: snd_pcm_dump():
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Soft volume PCM
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Control: PCM Playback Volume
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: min_dB: -51
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: max_dB: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: resolution: 256
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Its setup is:
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stream : PLAYBACK
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: access : MMAP_INTERLEAVED
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: format : S16_LE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: subformat : STD
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: channels : 4
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: rate : 44100
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: exact rate : 44100 (44100/1)
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: msbits : 16
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: buffer_size : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_size : 88208
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_time : 2000181
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: tstamp_mode : ENABLE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_step : 1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: avail_min : 440158
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_event : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: start_threshold : -1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stop_threshold : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_threshold: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_size : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: boundary : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel' device 0 subdevice 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: Its setup is:
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stream : PLAYBACK
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: access : MMAP_INTERLEAVED
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: format : S16_LE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: subformat : STD
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: channels : 4
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: rate : 44100
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: exact rate : 44100 (44100/1)
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: msbits : 16
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: buffer_size : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_size : 88208
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_time : 2000181
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: tstamp_mode : ENABLE
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_step : 1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: avail_min : 440158
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: period_event : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: start_threshold : -1
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: stop_threshold : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_threshold: 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: silence_size : 0
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: boundary : 7758857733029232640
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: appl_ptr : 441040
Oct 21 23:46:55 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-util.c: hw_ptr : 0
Oct 21 21:46:55 ***-laptop rtkit-daemon[2545]: Successfully made thread 3817 of process 3813 (n/a) owned by '1000' RT at priority 5.
Oct 21 21:46:55 ***-laptop rtkit-daemon[2545]: Supervising 4 threads of 1 processes of 1 users.
Oct 21 21:46:55 ***-laptop rtkit-daemon[2545]: Successfully made thread 3820 of process 3820 (n/a) owned by '1000' high priority at nice level -11.
Oct 21 21:46:55 ***-laptop rtkit-daemon[2545]: Supervising 5 threads of 2 processes of 1 users.
Oct 21 23:46:55 ***-laptop pulseaudio[3820]: [pulseaudio] pid.c: Daemon already running.
Oct 21 23:47:57 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-sink.c: ALSA weckte uns auf, um neue Daten auf das Gerät zu schreiben, doch es gab nichts zum Schreiben!
Oct 21 23:47:57 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-sink.c: Dies ist höchstwahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie diesen Fehler den ALSA-Entwicklern.
Oct 21 23:47:57 ***-laptop pulseaudio[3813]: [alsa-sink] alsa-sink.c: Wir wurden durch das POLLOUT-Set geweckt, allerdings lieferte ein anschliessender snd_pcm_avail() den Wert 0 oder einen anderen Wert < min_avail.
Oct 21 23:48:12 ***-laptop pulseaudio[3932]: [pulseaudio] main.c: User-configured server at {e8c41d29571d8acb12a310ab4b1acec5}unix:/home/***/.pulse/e8c41d29571d8acb12a310ab4b1acec5-runtime/native, which appears to be local. Probing deeper.
Oct 21 23:48:12 ***-laptop pulseaudio[3931]: [pulseaudio] main.c: User-configured server at {e8c41d29571d8acb12a310ab4b1acec5}unix:/home/***/.pulse/e8c41d29571d8acb12a310ab4b1acec5-runtime/native, which appears to be local. Probing deeper.

second excerpt now. This one occurs when I was listening music. I didn't notice it before I had a look at the log file:

Oct 21 23:50:19 ***-laptop pulseaudio[3992]: [alsa-sink] alsa-sink.c: ALSA weckte uns auf, um neue Daten auf das Gerät zu schreiben, doch es gab nichts zum Schreiben!
Oct 21 23:50:19 ***-laptop pulseaudio[3992]: [alsa-sink] alsa-sink.c: Dies ist höchstwahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie diesen Fehler den ALSA-Entwicklern.
Oct 21 23:50:19 ***-laptop pulseaudio[3992]: [alsa-sink] alsa-sink.c: Wir wurden durch das POLLOUT-Set geweckt, allerdings lieferte ein anschliessender snd_pcm_avail() den Wert 0 oder einen anderen Wert < min_avail.