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Thread: Intel Bay Trail audio issue

  1. #1
    Join Date
    Nov 2007
    Beans
    11

    Post Intel Bay Trail audio issue

    I am using an off-brand chinese laptop with Bay Trail architecture running Lubuntu 16.10. Managed to get audio working in VLC only by installing the 4.11 rc5 kernel and by by downloading files from https://github.com/plbossart/UCM and running
    Code:
    sudo cp -rf UCM-master/bytcr-rt5640 /usr/share/alsa/ucm
    Audio works in headphones only at the moment and the stereo channels are reversed.I dont think i can get speakers to work, but is it possible to get audio working for other programs and switching the stereo channels?
    aplay -l output
    Code:
    **** List of PLAYBACK Hardware Devices ****
    card 0: Audio [Intel HDMI/DP LPE Audio], device 0: HdmiLpeAudio [Intel HDMI/DP LPE Audio]
      Subdevices: 1/1
      Subdevice #0: subdevice #0
    card 1: bytcrrt5640 [bytcr-rt5640], device 0: 1 []
      Subdevices: 1/1
      Subdevice #0: subdevice #0
    card 1: bytcrrt5640 [bytcr-rt5640], device 1: Deep-Buffer Audio (*) []
      Subdevices: 1/1
      Subdevice #0: subdevice #0


    Audio only works with bytcr-rt5640 direct hardware device with no software conversions or bytcr-rt5640 hardware device with all software conversions.




    EDIT: Installed ubuntu with unity and the gnome sound manager lets me to select the proper device/output thing. Just need to reverse the stereo channels.
    Last edited by skerdziuzzz; April 9th, 2017 at 02:29 PM. Reason: Some progress

  2. #2
    Join Date
    Mar 2010
    Location
    Squidbilly-Land
    Beans
    20,232
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: Intel Bay Trail audio issue

    firefox stopped supporting ALSA a few weeks ago. Might be time to switch to Pulse-Audio. Can't believe I wrote that. I've been purging pulse from my systems for 5 yrs.

    The swapped speakers really sounds like a poor quality control issue - like open up the box and swap the speaker cables.

    Might want to specify the CPU, since "bay trail" doesn't help non-nerds (or people that don't do well with code words). As an example, I'm running 16.04, but couldn't tell you or anyone else what the "code name" is.

  3. #3
    Join Date
    Nov 2007
    Beans
    11

    Re: Intel Bay Trail audio issue

    Well i think its too early to say swapped speakers is a hardware problem since the sound drivers are kind of messed up, in any case it should be possible to swap them by editing alsa or pulse somehow.

    Bay Trail is the Intel Atom system on a chip with some kind of intel audio. Also this setup worked for all programs when i used regular ubuntu with unity.

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