[Trac-bugs] [PC-BSD Trac] #255: Duplicate Sound Devices Detected...Sound Not Working

PC-BSD trac at pcbsd.org
Mon Feb 22 11:58:55 PST 2010

#255: Duplicate Sound Devices Detected...Sound Not Working
 Reporter:  fitzlt                    |       Owner:         
     Type:  System Defect             |      Status:  new    
 Priority:  major                     |   Milestone:  8.0    
Component:  System Configuration      |     Version:  8.0-RC2
 Keywords:  Sound, Multimedia, Audio  |  

Comment(by kris):

 Here's something interesting from the snd_hda manpage (the driver for your

 A few Hardware/OEM vendors tend to screw up BIOS settings, thus rendering
 the snd_hda driver useless, which usually results in a state where the
 snd_hda driver seems to attach and work, but without any sound. Some of
 that cases can be solved by tuning loader.conf variables. But before try-
 ing to fix problem that way, make sure that problem is really exists and
 the PCM audio device you are using really corresponds to expected audio

 A friend of mine has a newer laptop, and we ran into an issue like this.
 What we found was that the headphone jack was active, and plugging into
 that resulted in working sound (via the headphones) According to the
 manpage (man snd_hda) there are some configuration options which can be
 used to re-assign the pin / port configuration to default to the speakers,
 but it may vary from system to system :(

 Can you check the headphone jack, see if we have sound there? If so, it
 may be worthwhile to send a message over to freebsd-multimedia below,
 since thats where most of the sound developers hang out, and they may have
 some suggestions on changing the pin configuration via the software:


Ticket URL: <https://trac.pcbsd.org/ticket/255#comment:4>
PC-BSD <http://trac.pcbsd.org>
PC-BSD Project Management

More information about the Trac-bugs mailing list