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No LFE channel (subwoofer) in Ubuntu.
satsun Offline
Junior Member

Posts: 13
Threads: 6
Joined: May 2011
Reputation: 0
#1
Solved: 8 Years, 1 Month ago No LFE channel (subwoofer) in Ubuntu.

I'm running Ubuntu 11.10 64bit with a Creative X-Fi Titanium PCI-E card. In the sound mixer I have it setup for 7.1 + mono input (mic) and when I test each channel I get sound in all including the LFE. After a fresh install, the center and LFE are always muted so I unmute them via alsamixer.

LFE does work in Banshee media player when watching movies.

My audio options in the launcher are:
PulseAudio Software
ALSA Software on default

I get 7 channels working properly but no LFE channel.

This is using ALSA:
Initializing Sound Module
--------------------------------------------------------
Initializing OpenAL
  Available OpenAL devices:
   0. PulseAudio Software(OpenAL default)
   1. ALSA Software on default
   2. ALSA Software on HDA NVidia [HDMI 0] (hw:0,3)
   3. ALSA Software on HDA NVidia [HDMI 0] (hw:0,7)
   4. ALSA Software on HDA NVidia [HDMI 0] (hw:0,8)
   5. ALSA Software on HDA NVidia [HDMI 0] (hw:0,9)
   6. ALSA Software on Creative X-Fi [Front/WaveIn] (hw:1,0)
   7. ALSA Software on Creative X-Fi [Surround] (hw:1,1)
   8. ALSA Software on Creative X-Fi [Center/LFE] (hw:1,2)
   9. ALSA Software on Creative X-Fi [Side] (hw:1,3)
   10. ALSA Software on Creative X-Fi [IEC958 Non-audio] (hw:1,4)
  Trying to open device 'ALSA Software on default'... Success!
  Number of mono sources: 32
  Streaming setup: 4 Buffers x 262144 bytes each

This is using PulseAudio:
Initializing Sound Module
--------------------------------------------------------
Initializing OpenAL
  Available OpenAL devices:
   0. PulseAudio Software(OpenAL default)
   1. ALSA Software on default
   2. ALSA Software on HDA NVidia [HDMI 0] (hw:0,3)
   3. ALSA Software on HDA NVidia [HDMI 0] (hw:0,7)
   4. ALSA Software on HDA NVidia [HDMI 0] (hw:0,8)
   5. ALSA Software on HDA NVidia [HDMI 0] (hw:0,9)
   6. ALSA Software on Creative X-Fi [Front/WaveIn] (hw:1,0)
   7. ALSA Software on Creative X-Fi [Surround] (hw:1,1)
   8. ALSA Software on Creative X-Fi [Center/LFE] (hw:1,2)
   9. ALSA Software on Creative X-Fi [Side] (hw:1,3)
   10. ALSA Software on Creative X-Fi [IEC958 Non-audio] (hw:1,4)
  Trying to open device 'PulseAudio Software'... Success!
  Number of mono sources: 32
  Streaming setup: 4 Buffers x 262144 bytes each
But with PulseAudio I get this message:
$ AL lib: pulseaudio.c:412: Failed to find format for channel map:
    front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right

Any ideas? Do I need to install some other OpenAL library?

Let me know if any other information is needed.
(This post was last modified: 10-29-2011, 07:30 PM by satsun.)
10-29-2011, 07:15 PM
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No LFE channel (subwoofer) in Ubuntu. - by satsun - 10-29-2011, 07:15 PM



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