On Wed, 11 Sep 2013, Bill Kirkpatrick wrote: > I also have a now sound problem with an NVidia card. Here's where I > am.... > > 1) PulseAudio is disabled. (Not shown in ps ax, and volume control > reports it cannot connect to the server)
ok > 2) Moved KDE settings away from alsa device hw:2.7 not sure what that would(n't) do as I am not too familiar with kde,but it makes sense. > 3) mplayer will use alsa device hw:2.7 and plays just fine. > 4) if I start jackd on alsa hw:2.7 while mplayer is using it, jackd > reports device is in use. good. > 5) If I start jackd without mplayer running, jackd starts just fine and > mplayer then reports the device is in use. good. > 6) jackd creates a system playback sink. Not quite the terminology I am used to with jack, but assuming same as pulse, good. Question: how are you starting jack? Are you running jackd or jackdbus? (both are shipped in the jackd2 package) What do the logs say? How are you seeing the logging output of jack? > 7) Now, with 'mplayer -ao jack x.mp3' jack creates a mplayer source and > maps it to the system sink. How are you seeing the system sink? with what command or application? > 8) No sound. Alsamixer reports no applications are playing audio. The alsamixer I know does not report if sound is being played or not, only control levels. Alsa itself does not report connections. What application are you using to see this? If you have disabled pulse, the output level may be down. If you run alsamixer in a terminal can you turn all the levels up, are any channels muted? > 9) if I run qjackrec, jackd will map the mplayer source to both the > system and qjackreq sinks. qjackreq captures the audio into a .wav file > just fine, but still no audio output. After jackd is shutdown, mplayer > will play qjackrec's .wav file (via alsa, again on hw:2.7). So it appears, audio is getting to jack just fine and jack is sending the signal on. However jack does not control output levels, that has to be done manually. Running alsamixer from a terminal is the most surefire way of knowing you are dealing with the right controls. Use F6 to select your hw:2.7 sounds card. > 10) All the while jackd is running, including the period mplayer is > playing into jack, alsamixer reports that no applications are playing > sound. Alsamixer does not report connections like pulse does or pavucontrol or the kde mixer (also a pulse controler). Sent via email for easier quoting. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1201739 Title: no sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1201739/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
