EPILOG -> -> A Sound Mystery
To recap:
besenmuckel hat folgendes geschrieben::
for lsof
Code:
apt-get install lsof
Package already installed in both Mint and Kanotix distros.
TheOne hat folgendes geschrieben::
If some application blocks your sound device, you can see that via
Code:
lsof | grep snd
This produced a plethora of info, and I ended up not being able to see the wood for the trees and might have been in danger of killing an essential proces
besenmuckel hat folgendes geschrieben::
Thanx
Mint hat folgendes geschrieben::
mint@mint ~ $ lsof | grep pcm
pulseaudi 4642 mint mem CHR 116,3 13176 /dev/snd/pcmC0D0p
pulseaudi 4642 mint 36u CHR 116,3 0t0 13176 /dev/snd/pcmC0D0p
plugin-co 5013 mint mem REG 0,16 22076 19784 /usr/lib/alsa-lib/libasound_module_pcm_pulse.so
besenmuckel hat folgendes geschrieben::
http://wiki.ubuntuusers.de/Soundkarten_konfigurieren/HDA?redirect=no hat folgendes geschrieben::
Dazu muss die Datei /etc/modprobe.d/alsa-base.conf ... folgende Zeile eingefügt:
options snd-hda-intel model=3stack
Nach dem Ändern der Datei kann der Rechner neu gestartet werden. ALSA erfährt dann beim Starten, welcher HDA-Typ angesprochen wird.
After restarting the problem still persisted. Well since then there has been an intervening cold start.
On getting to desktop minimised all windows and ran
Code:
kanotix@Kanotix:~$ lsof | grep pcm
lsof: WARNING: can't stat() ext2 file system /isofrom
Output information may be incomplete.
lsof: WARNING: can't stat() squashfs file system /filesystem.squashfs
Output information may be incomplete.
lsof: WARNING: can't stat() ext2 file system /live-rw-backing
Output information may be incomplete.
Possibly no one blocking sound access, so ran Kaffeine, which worked
Following which ran
Code:
kanotix@Kanotix:~$ lsof | grep pcm
kaffeine- 3538 kanotix mem CHR 116,3 10697 /dev/snd/pcmC0D0p
kaffeine- 3538 kanotix 19u CHR 116,3 0t0 10697 /dev/snd/pcmC0D0p
TheOne hat folgendes geschrieben::
Try to increase volume of PCM and Master channel.
Kano hat folgendes geschrieben::
Usally you need to increase front too.
With Kaffeine running, ran 'alsamixer' and was able to adjust contols and eliminate unnecessary ones -> ->
Ran Flash Video in Iceweasel
Code:
kanotix@Kanotix:~$ lsof | grep pcm
plugin-co 3715 kanotix mem CHR 116,3 10697 /dev/snd/pcmC0D0p
plugin-co 3715 kanotix 22u CHR 116,3 0t0 10697 /dev/snd/pcmC0D0p
Played a sound
Code:
kanotix@Kanotix:~$ play /usr/share/sounds/KDE-Im-New-Mail.ogg
/usr/share/sounds/KDE-Im-New-Mail.ogg:
File Size: 23.4k Bit Rate: 181k
Encoding: Vorbis
Channels: 2 @ 16-bit
Samplerate: 48000Hz
Replaygain: off
Duration: 00:00:01.03
In:100% 00:00:01.03 [00:00:00.00] Out:49.7k [ | ] Clip:0
Done.
Ran Gnome Media Player followed by a Sound
Code:
kanotix@Kanotix:~$ lsof | grep pcm
mplayer 4712 kanotix mem CHR 116,3 10697 /dev/snd/pcmC0D0p
mplayer 4712 kanotix 7w CHR 116,3 0t0 10697 /dev/snd/pcmC0D0p
kanotix@Kanotix:~$ play /usr/share/sounds/KDE-Im-New-Mail.ogg
/usr/share/sounds/KDE-Im-New-Mail.ogg:
File Size: 23.4k Bit Rate: 181k
Encoding: Vorbis
Channels: 2 @ 16-bit
Samplerate: 48000Hz
Replaygain: off
Duration: 00:00:01.03
In:100% 00:00:01.03 [00:00:00.00] Out:49.7k [ | ] Clip:0
Done.
Had gnome audio o/p set to 'pulse' but there was no sound until reset to 'alsa'
Checked sound file device
Code:
kanotix@Kanotix:~$ lsof | grep pcm
plugin-co 4739 kanotix mem CHR 116,3 10697 /dev/snd/pcmC0D0p
plugin-co 4739 kanotix 20u CHR 116,3 0t0 10697 /dev/snd/pcmC0D0p
Flash Plugin seems to always grab the sound device file, but this time appears to have relinquished it to the active process. It is this same plugin plugin-co which had the sound device file before, when nothing was happening. So it remains a puzzle as to why this plugin now seems to be behaving properly.
Attached file lists all processes on m/c., and maybe s.o. can spot one which could have been responsible for locking out processes from the sound device file. |