diff --git a/mopidy/__main__.py b/mopidy/__main__.py
index 12d27ed3..2086a2e8 100644
--- a/mopidy/__main__.py
+++ b/mopidy/__main__.py
@@ -1,5 +1,6 @@
 import asyncore
 import logging
+import logging.handlers
 import multiprocessing
 import optparse
 import os
@@ -16,7 +17,7 @@ logger = logging.getLogger('mopidy.main')
 
 def main():
     options = _parse_options()
-    _setup_logging(options.verbosity_level)
+    _setup_logging(options.verbosity_level, options.dump)
     get_or_create_folder('~/.mopidy/')
     core_queue = multiprocessing.Queue()
     get_class(settings.SERVER)(core_queue)
@@ -32,17 +33,35 @@ def _parse_options():
     parser.add_option('-v', '--verbose',
         action='store_const', const=2, dest='verbosity_level',
         help='more output (debug level)')
+    parser.add_option('--dump',
+        action='store_true', dest='dump',
+        help='dump debug log to file')
     return parser.parse_args()[0]
 
-def _setup_logging(verbosity_level):
+def _setup_logging(verbosity_level, dump):
     if verbosity_level == 0:
         level = logging.WARNING
     elif verbosity_level == 2:
         level = logging.DEBUG
     else:
         level = logging.INFO
+
     logging.basicConfig(format=settings.CONSOLE_LOG_FORMAT, level=level)
 
+    if not dump:
+        return
+
+    root = logging.getLogger('')
+    root.setLevel(logging.DEBUG)
+
+    formatter = logging.Formatter(settings.DUMP_LOG_FORMAT)
+
+    handler = logging.handlers.RotatingFileHandler(
+        settings.DUMP_LOG_FILENAME, maxBytes=102400, backupCount=3)
+    handler.setFormatter(formatter)
+
+    root.addHandler(handler)
+
 if __name__ == '__main__':
     try:
         main()
diff --git a/mopidy/mixers/alsa.py b/mopidy/mixers/alsa.py
index 9bcd8b6f..4fd84fd2 100644
--- a/mopidy/mixers/alsa.py
+++ b/mopidy/mixers/alsa.py
@@ -1,6 +1,7 @@
 import alsaaudio
 import logging
 
+from mopidy import settings
 from mopidy.mixers import BaseMixer
 
 logger = logging.getLogger('mopidy.mixers.alsa')
@@ -13,17 +14,30 @@ class AlsaMixer(BaseMixer):
 
     def __init__(self, *args, **kwargs):
         super(AlsaMixer, self).__init__(*args, **kwargs)
-        # A mixer named 'Master' does not always exist, so we fall back to
-        # using 'PCM'. If this turns out to be a bad solution, we should make
-        # it possible to override with a setting.
-        self._mixer = None
-        for mixer_name in (u'Master', u'PCM'):
-            if mixer_name in alsaaudio.mixers():
-                logger.info(u'Mixer in use: %s', mixer_name)
-                self._mixer = alsaaudio.Mixer(mixer_name)
-                break
+        self._mixer = alsaaudio.Mixer(self._get_mixer_control())
         assert self._mixer is not None
 
+    def _get_mixer_control(self):
+        """Returns the first mixer control candidate that is known to ALSA"""
+        candidates = self._get_mixer_control_candidates()
+        for control in candidates:
+            if control in alsaaudio.mixers():
+                logger.info(u'Mixer control in use: %s', control)
+                return control
+            else:
+                logger.debug(u'Mixer control not found, skipping: %s', control)
+        logger.warning(u'No working mixer controls found. Tried: %s', candidates)
+
+    def _get_mixer_control_candidates(self):
+        """
+        A mixer named 'Master' does not always exist, so we fall back to using
+        'PCM'. If this does not work for you, you may set
+        :attr:`mopidy.settings.MIXER_ALSA_CONTROL`.
+        """
+        if settings.MIXER_ALSA_CONTROL:
+            return [settings.MIXER_ALSA_CONTROL]
+        return [u'Master', u'PCM']
+
     def _get_volume(self):
         return self._mixer.getvolume()[0]
 
diff --git a/mopidy/mpd/server.py b/mopidy/mpd/server.py
index bd37c998..80eca5f9 100644
--- a/mopidy/mpd/server.py
+++ b/mopidy/mpd/server.py
@@ -68,7 +68,8 @@ class MpdSession(asynchat.async_chat):
         data = ''.join(self.input_buffer).strip()
         self.input_buffer = []
         request = data.decode(ENCODING)
-        logger.debug(u'Input: %s', indent(request))
+        host, port = self.client_address
+        logger.debug(u'Input (%s:%s): %s', host, port, indent(request))
         self.handle_request(request)
 
     def handle_request(self, request):
@@ -87,7 +88,8 @@ class MpdSession(asynchat.async_chat):
         self.send_response(LINE_TERMINATOR.join(response))
 
     def send_response(self, output):
-        logger.debug(u'Output: %s', indent(output))
+        host, port = self.client_address
+        logger.debug(u'Output (%s:%s): %s', host, port, indent(output))
         output = u'%s%s' % (output, LINE_TERMINATOR)
         data = output.encode(ENCODING)
         self.push(data)
diff --git a/mopidy/settings.py b/mopidy/settings.py
index 886e7189..a2ba88e5 100644
--- a/mopidy/settings.py
+++ b/mopidy/settings.py
@@ -29,6 +29,14 @@ BACKENDS = (
 CONSOLE_LOG_FORMAT = u'%(levelname)-8s %(asctime)s' + \
     ' [%(process)d:%(threadName)s] %(name)s\n  %(message)s'
 
+#: The log format used for dump logs. Default::
+#:    DUMP_LOG_FILENAME = CONSOLE_LOG_FORMAT
+DUMP_LOG_FORMAT = CONSOLE_LOG_FORMAT
+
+#: The file to dump debug log data to. Default::
+#:    DUMP_LOG_FILENAME = u'dump.log'
+DUMP_LOG_FILENAME = u'dump.log'
+
 #: Protocol frontend to use. Default::
 #:
 #:     FRONTEND = u'mopidy.mpd.frontend.MpdFrontend'
@@ -53,6 +61,12 @@ if sys.platform == 'linux2':
 elif sys.platform == 'darwin':
     MIXER = u'mopidy.mixers.osa.OsaMixer'
 
+#: ALSA mixer only. What mixer control to use. If set to :class:`False`, first
+#: ``Master`` and then ``PCM`` will be tried.
+#:
+#: Example: ``Master Front``. *Default:* :class:`False`
+MIXER_ALSA_CONTROL = False
+
 #: External mixers only. Which port the mixer is connected to.
 #:
 #: This must point to the device port like ``/dev/ttyUSB0``.