#839 Logitech G930 right earphone output only

1.2.3
open
nobody
Mumble (544)
5
2014-08-20
2011-10-26
Anonymous
No

When using a Logitech G930 headset (and required drivers) in stereo mode (not 7.1) together with the WASAPI output mode on Windows Vista/7, Mumble will only output to the right earphone on the headset. Voice transmitting works fine. When switching the headset back to 7.1, playback is correctly using all the earphones again. Fiddling with the positional audio seems to make it a little better, but does not fix it. This seems to be cause by the WASAPI output mode being confused between surround sound and stereo output?

I realise this may not strictly be a Mumble issue, but I'm logging it here just for future reference and in the hope that at some point someone will figure out what the exact issue is here and fix it. This issue only exists for Mumble: other applications do not seem to suffer from this.

REPRODUCE:
- Switch the Logitech G930 to stereo mode
- Restart Mumble
- Audio output (other people or loopback) is only played to the right earphone

CURRENT WORKAROUND:
- Configure Mumble to run in Windows XP (SP3) compatibility mode
- This will force Mumble to use DirectSound output mode
- Using DirectSound output mode, this issue disappears

Discussion

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    Anonymous - 2011-10-26

    DxDiag output

     
    Last edit: Anonymous 2013-11-26
  • Nicos Gollan

    Nicos Gollan - 2011-10-26

    Do you have positional audio enabled in Mumble?

     
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    Anonymous - 2011-10-26

    Not by default. Enabling positional audio and then "Headphones" with the headset in stereo mode seems to alleviate the symptoms a little (meaning: there is a faint audio output in the left earphone).

     
  • Benjamin Jemlich

    Could you post the client log with and without positional audio? (%APPDATA%\Mumble\Console.txt)

     
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    Anonymous - 2011-10-26

    Log of stereo without positional audio

     
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    Anonymous - 2011-10-26

    Log of stereo with positional audio

     
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    Anonymous - 2011-10-26

    I have added the logs as attached files below.

    Having done the test again, though, I'm not entirely sure my initial feedback was correct. It's hard to tell, but I think the output to the left earphone is still slightly more noticeable with positional audio, but I think this might be due to the fact that positional audio + headphones seems to increase the volume. So there might be output to the left earphone, it may just be really quiet. Also, I think this is a general issue with the headphones: when in stereo mode, it favours the right channel over the left in almost all applications (just not as noticeable as in Mumble).

    Hope it helps! If I have to test any more stuff, let me know. Happy to help.

     
    Last edit: Anonymous 2016-01-10
  • Benjamin Jemlich

    Try the current development snapshot. Maybe it's fixed now (with positional audio disabled).

     
  • Gimlao

    Gimlao - 2013-08-13

    Still not fixed today.

     

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