* backport of [11313]

modules/audio_output/auhal.c

@@ -300,6 +300,9 @@ static int Open( vlc_object_t * p_this )
                 continue;
             default:
                 msg_Warn( p_aout, "Unrecognized channel form provided by driver: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
+                if( i == 0 )
+                {
+                    msg_Warn( p_aout, "Probably no channellayout is set. force based on channelcount" );
                     switch( layout->mNumberChannelDescriptions )
                     {
                         /* We make assumptions based on number of channels here.
@@ -331,6 +334,7 @@ static int Open( vlc_object_t * p_this )
                         default:
                             p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
                     }
+                }
                 break;
         }
     }