[SOLVED] HDMI Audio Not Working
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  1. #1
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    Apr 2012
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    HDMI Audio Not Working

    hmmm. so I plugged in a TV with an HDMI cable and got video! awesome! but oh no, there's no sound!
    This is from a laptop with an ATI Radeon card built in. Analog audio works and plays out from the laptop's speakers. But selecting the HDMI card doesn't play audio out the TV speakers. I know the hardware is good, because it works in Ubuntu, and so linux can do it. But nothing I'm trying in Fedora 16 is working.

    When playing a video in VLC I go to TOOLS / PREFERENCES / AUDIO and choose ALSA audio output for (hw:0,0) and it plays on the laptop speakers, but when I choose the other two options it doesn't play any sound. It should play sound on HDMI using (hw:1,3) but it doesn't. Anyone got any ideas? I've seen lots of posts about it, and people saying it was a pain, but nothing has worked for me so far.

    When I run aplay I see the audio cards listed in VLC.
    Code:
    **** List of PLAYBACK Hardware Devices ****
    card 0: SB [HDA ATI SB], device 0: ALC888 Analog [ALC888 Analog]
      Subdevices: 0/1
      Subdevice #0: subdevice #0
    card 0: SB [HDA ATI SB], device 1: ALC888 Digital [ALC888 Digital]
      Subdevices: 1/1
      Subdevice #0: subdevice #0
    card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
      Subdevices: 1/1
      Subdevice #0: subdevice #0

  2. #2
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    Re: HDMI Audio Not Working

    What graphic driver are you using ? proprietary fglrx ? or open source radeon ? Its typically the graphic driver that provides this HDMI functionality.

    I read that the HDMI audio module is disabled by default in kernel >=3.0 for most GNU/Linux distributions.

    On some GNU/Linux distributions (I do not know if this is the case for Fedora) you can add radeon.audio=1 as a kernel boot code to enable HDMI in the radeon graphic driver.

    If you are using the fglrx graphic driver then I think HDMI should 'just work' without any boot codes.

  3. #3
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    Re: HDMI Audio Not Working

    I thought the video would be a separate issue.

    Video is working great, I hate to screw it up...

    The system info says I'm using "Gallium 0.4 on AMD RS780 "

    I don't remember which one Gallium is... I know I had issues trying to get the proprietary radeon drivers installed from their website. I think I ended up not using it.

    I've used Ubuntu for many years, and never had a problem with this post-Hardy (in 2008). I recently tried Fedora again, and there are several things about it I like better... but HDMI audio is a deal breaker for me.

    I guess i'll play with the video driver and see if I can get things even more screwed up.

    ---------- Post added at 12:19 AM ---------- Previous post was at 12:14 AM ----------

    You're right, I'm not using the ATI drivers...

    Did a "yum install xorg-x11-drv-catalyst.x86_64" and it's downloading it now... but I'm on a Marriot hotel Wifi, so it's going to take like an hour...

    as I remember it, these drivers don't work for me for some reason... and it really creates a big mess... hmm... we'll see... I'd rather be running these video drivers, I just dropped that issue since I had video straightened out without it. But video does playback kinda "pausy" sometimes... so maybe this will fix everything.

    ---------- Post added at 12:51 AM ---------- Previous post was at 12:19 AM ----------

    Well, you're a genius... it works!

    The driver in the repository was version 12.4, which is newer than last time I tried, it was like on 12.1 back then... and this time it worked OOTB.

  4. #4
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    Re: HDMI Audio Not Working

    Quote Originally Posted by Kissell
    You're right, I'm not using the ATI drivers...
    .....
    Did a "yum install xorg-x11-drv-catalyst.x86_64" and it's downloading it now...
    ...
    it works!

    The driver in the repository was version 12.4, which is newer than last time I tried, it was like on 12.1 back then... and this time it worked OOTB.

    Good news !

    A correction to my previous post, where I stated:
    Quote Originally Posted by oldcpu
    I read that the HDMI audio module is disabled by default in kernel >=3.0 for most GNU/Linux distributions.
    I meant to state: I read that the HDMI audio module is disabled by default in kernel >=3.0 for most GNU/Linux distributions with the radeon open source graphic driver.

  5. #5
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    Re: HDMI Audio Not Working

    Video flickers now... that's annoying... but I guess audio is working.

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