I have a similar - I think - error - where sound will sometimes no
longer work after switching from one user to another.
Output after I type: ~$ sudo alsa force-reload
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/paul/.gvfs
Output information may be incomplete.
Terminating processes: 3651 4545lsof: WARNING: can't stat()
fuse.gvfs-fuse-daemon file system /home/paul/.gvfs
Output information may be incomplete.
14406lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system
/home/paul/.gvfs
Output information may be incomplete.
14420lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system
/home/paul/.gvfs
Output information may be incomplete.
14420lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system
/home/paul/.gvfs
Output information may be incomplete.
(with SIGKILL:) 14442lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file
system /home/paul/.gvfs
Output information may be incomplete.
(failed: processes still using sound devices: 14457(pulseaudio)).
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/paul/.gvfs
Output information may be incomplete.
/sbin/alsa: Warning: Processes using sound devices: 14457(pulseaudio).
Unloading ALSA sound driver modules: snd-hda-codec-realtek snd-hda-intel
snd-hda-codec snd-hwdep snd-pcm-oss snd-mixer-oss snd-pcm snd-seq-dummy
snd-seq-oss snd-seq-midi snd-rawmidi snd-seq-midi-event snd-seq snd-timer
snd-seq-device snd-page-alloc (failed: modules still loaded:
snd-hda-codec-realtek snd-hda-intel snd-hda-codec snd-hwdep snd-pcm snd-timer
snd-page-alloc).
Loading ALSA sound driver modules: snd-hda-codec-realtek snd-hda-intel
snd-hda-codec snd-hwdep snd-pcm-oss snd-mixer-oss snd-pcm snd-seq-dummy
snd-seq-oss snd-seq-midi snd-rawmidi snd-seq-midi-event snd-seq snd-timer
snd-seq-device snd-page-alloc.
Output in syslog:
Feb 6 18:55:52 gandalf pulseaudio[14440]: main.c: Daemon startup failed.
Feb 6 18:55:52 gandalf pulseaudio[14453]: pid.c: Daemon already running.
Feb 6 18:55:53 gandalf pulseaudio[14457]: pid.c: Stale PID file, overwriting.
Feb 6 18:55:55 gandalf pulseaudio[14577]: pid.c: Daemon already running.
Feb 6 18:56:10 gandalf pulseaudio[14457]: ratelimit.c: 7 events suppressed
Feb 6 18:57:11 gandalf pulseaudio[14457]: ratelimit.c: 134 events suppressed
--
no sound on startup
https://bugs.launchpad.net/bugs/398085
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