Hardware audio output does not work, Ubuntu Server 12.04, selection kills streaming
  • Vote Up0Vote Down Larry MathewsLarry Mathews
    Posts: 15Member
    After making a fresh install of Ubuntu Server 12.04 64 bit on an Asus 1215 and Asus 1005 laptop (same results in both machines), I am only able to activate streaming.  When the hardware audio output (ALSA) is selected, neither the onboard sound or the streaming work.  Trying to manually start the airtime-playout fails.
    When the onboard audio sound is selected, the LIQUIDSOAP_PROCESS_ID  = FAILED when I run sudo airtime-check-system.  
    However, when the hardware audio output is deselected, then LIQUIDSOAP_PROCESS_ID = 11620, and the streaming works fine.
    The Asus 1005 used to work with Ubuntu 10.04, and the Asus 1215 with Ubuntu 11.10 (needed the newer version for support of the newer sound device in this laptop).
    Larry
  • 5 Comments sorted by
  • Vote Up0Vote Down Spyros TheodosisSpyros Theodosis
    Posts: 11Member
    Have you checked the logs ?

    I got the same behavior and i found in logs that the liquidsoap won't start without pulse-audio:

    2012/07/23 13:02:36 [clock.wallclock_pulse:2] Error when starting output pulse_out(liquidsoap:): Pulseaudio error: Connection refused!
    2012/07/23 13:02:36 [clock.wallclock_pulse:3] Raised by primitive operation at file "", line 0, characters 0-0
    2012/07/23 13:02:36 [airtime_128:3] Connecting mount airtime_128 for source@airtime...

    After i reinstalled the pulse-audio the problem was solved.

    Probably this is an ubuntu issue.
    Post edited by Spyros Theodosis at 2012-07-23 07:08:06
  • Vote Up0Vote Down Spyros TheodosisSpyros Theodosis
    Posts: 11Member
    see airtime in- ubuntu-12.04 without pulseaudio
    Post edited by Spyros Theodosis at 2012-07-23 06:56:16
  • Vote Up0Vote Down Larry MathewsLarry Mathews
    Posts: 15Member
    My logs are similar. I installed pulseaudio.  The hardware audio is now working.  This works on reboot without logging in.  I think the CPU load may be a bit higher.

    Thanks!
  • Vote Up0Vote Down Larry MathewsLarry Mathews
    Posts: 15Member
    I tried the low latency kernel and found the load average dropped from 1.8 to less than 0.5.  I wonder if it would be better to run the low latency kernel?
  • Vote Up0Vote Down Martin KonecnyMartin Konecny
    Posts: 1,860Member
    " I wonder if it would be better to run the low latency kernel?"

    That would be an interesting experiment :)


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