Bug#748915: pulseaudio: Microphone input is crackling in skype and sound record program. Output is OK.

[Nikolay Shindarov]

Package: pulseaudio
Version: 2.0-6.1
Severity: important

   * What led up to the situation? Using micropohone.
   * What exactly did you do (or not do) that was effective (or
     ineffective)? I tried: modifying pulseuadio default.pa and daemon.conf files and even updating the kernel to 3.13 with no effect. What I tried is described here: http://forums.debian.net/viewtopic.php?f=7&t=114603&p=541465#p541465 
   * What was the outcome of this action? Crackling output which was present as well dissapeared after updating the pulseaudio files while input stayed crackling.
   * What outcome did you expect instead? The crackling input to be fixed as well.


-- System Information:
Debian Release: 7.5
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.13-0.bpo.1-amd64 (SMP w/4 CPU cores)
Locale: LANG=bg_BG.UTF-8, LC_CTYPE=bg_BG.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages pulseaudio depends on:
ii  adduser                       3.113+nmu3
ii  consolekit                    0.4.5-3.1
ii  libasound2                    1.0.25-4
ii  libasound2-plugins            1.0.25-2
ii  libc6                         2.13-38+deb7u1
ii  libcap2                       1:2.22-1.2
ii  libdbus-1-3                   1.6.8-1+deb7u1
ii  libfftw3-3                    3.3.2-3.1
ii  libgcc1                       1:4.7.2-5
ii  libice6                       2:1.0.8-2
ii  libltdl7                      2.4.2-1.1
ii  liborc-0.4-0                  1:0.4.16-2
ii  libpulse0                     2.0-6.1
ii  libsamplerate0                0.1.8-5
ii  libsm6                        2:1.2.1-2
ii  libsndfile1                   1.0.25-5
ii  libspeexdsp1                  1.2~rc1-7
ii  libstdc++6                    4.7.2-5
ii  libsystemd-daemon0            44-11+deb7u4
ii  libsystemd-login0             44-11+deb7u4
ii  libtdb1                       1.2.10-2
ii  libudev0                      175-7.2
ii  libwebrtc-audio-processing-0  0.1-2
ii  libx11-6                      2:1.5.0-1+deb7u1
ii  libx11-xcb1                   2:1.5.0-1+deb7u1
ii  libxcb1                       1.8.1-2+deb7u1
ii  libxtst6                      2:1.2.1-1+deb7u1
ii  lsb-base                      4.1+Debian8+deb7u1
ii  udev                          175-7.2

Versions of packages pulseaudio recommends:
ii  gstreamer0.10-pulseaudio  0.10.31-3+nmu1
ii  pulseaudio-module-x11     2.0-6.1
ii  rtkit                     0.10-2+wheezy1

Versions of packages pulseaudio suggests:
pn  paman             <none>
pn  paprefs           <none>
pn  pavucontrol       <none>
pn  pavumeter         <none>
ii  pulseaudio-utils  2.0-6.1

-- Configuration Files:
/etc/pulse/daemon.conf changed:
; daemonize = no
; fail = yes
; allow-module-loading = yes
; allow-exit = yes
; use-pid-file = yes
; system-instance = no
; local-server-type = user
; enable-shm = yes
; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
; lock-memory = no
; cpu-limit = no
; high-priority = yes
; nice-level = -11
; realtime-scheduling = yes
; realtime-priority = 5
; exit-idle-time = 20
; scache-idle-time = 20
; dl-search-path = (depends on architecture)
; load-default-script-file = yes
; default-script-file = /etc/pulse/default.pa
; log-target = auto
; log-level = notice
; log-meta = no
; log-time = no
; log-backtrace = 0
; resample-method = speex-float-3
; enable-remixing = yes
; enable-lfe-remixing = no
 flat-volumes = no
; rlimit-fsize = -1
; rlimit-data = -1
; rlimit-stack = -1
; rlimit-core = -1
; rlimit-as = -1
; rlimit-rss = -1
; rlimit-nproc = -1
; rlimit-nofile = 256
; rlimit-memlock = -1
; rlimit-locks = -1
; rlimit-sigpending = -1
; rlimit-msgqueue = -1
; rlimit-nice = 31
; rlimit-rtprio = 9
; rlimit-rttime = 1000000
; default-sample-format = s16le
 default-sample-rate = 48000
; alternate-sample-rate = 48000
; default-sample-channels = 2
; default-channel-map = front-left,front-right
; default-fragments = 4
; default-fragment-size-msec = 25
; enable-deferred-volume = yes
; deferred-volume-safety-margin-usec = 8000
; deferred-volume-extra-delay-usec = 0

/etc/pulse/default.pa changed:
..nofail
..fail
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore
load-module module-augment-properties
..ifexists module-udev-detect.so
load-module module-udev-detect tsched=0
..else
load-module module-detect
..endif
..ifexists module-jackdbus-detect.so
..nofail
load-module module-jackdbus-detect
..fail
..endif
..ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
..endif
..ifexists module-esound-protocol-unix.so
load-module module-esound-protocol-unix
..endif
load-module module-native-protocol-unix
..ifexists module-gconf.so
..nofail
load-module module-gconf
..fail
..endif
load-module module-default-device-restore
load-module module-rescue-streams
load-module module-always-sink
load-module module-intended-roles
load-module module-suspend-on-idle
..ifexists module-console-kit.so
load-module module-console-kit
..endif
..ifexists module-systemd-login.so
load-module module-systemd-login
..endif
load-module module-position-event-sounds
load-module module-role-cork
load-module module-filter-heuristics
load-module module-filter-apply
..ifexists module-dbus-protocol.so
load-module module-dbus-protocol
..endif
load-module module-switch-on-port-available


-- no debconf information