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Even With AMDGPU DC, HDMI/DP Audio Isn't Working Out For All Radeon Linux Users

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  • #11
    Originally posted by debianxfce View Post
    Do not waste poor APUs or any high performance computers cpu cycles to hdmi audio. Hdmi audio code is large and complex, see the source code. PC motherboards have had hifi quality analog audio outputs for a decade. Only the background music is mixed to back speakers in most of the movies, so multi channel audio is useless. Invest to a pair of good speakers.

    My audio setup:
    Amplifier: S.M.S.L SA-36A Pro
    Speakers: B&W DM 601 S2
    Thats exactly how debian works: If its new or at least current, it's bad, noone needs it.

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    • #12
      This is something which needs to be fixed or lots users will loose interest in their APUs.
      ## VGA ##
      AMD: X1950XTX, HD3870, HD5870
      Intel: GMA45, HD3000 (Core i5 2500K)

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      • #13
        Originally posted by debianxfce View Post
        Do not waste poor APUs or any high performance computers cpu cycles to hdmi audio. Hdmi audio code is large and complex, see the source code. PC motherboards have had hifi quality analog audio outputs for a decade. Only the background music is mixed to back speakers in most of the movies, so multi channel audio is useless. Invest to a pair of good speakers.

        My audio setup:
        Amplifier: S.M.S.L SA-36A Pro
        Speakers: B&W DM 601 S2
        I would really not call Audio Out from any motherboard Hi-Fi, as usually any DAC over 120$ will deliver a perceivable improvement, if the rest of the audio chain is good enough to deliver it. And regarding your audio setup, I think that the amplifier dont do justice to those speakers.

        A quality stereo/binaural headphones can deliver basically as much space perception as any 5.1, 7.1,... system out there.
        Has to hear yet a 7.1 or other high speaker count audio system to deliver better sound experience as a binaural/true audio session on a good headphones or a good stereo speaker system.
        My setup is:
        Speakers: Alesis M1 active MK2
        Headphones: Audeze LCD-2.2
        DAC: DIY dac with AK4497
        Headphone amp: DIY headphone amplifier AMB Beta22
        Last edited by partizann; 02-21-2018, 06:48 AM.

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        • #14
          I'd be curious to know where folk are getting these cool sound sources from? Is that what's built into 4K Blurays?

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          • #15
            In another thread about raven ridge, Bridgman and Alex blame the device makers for the poor raven ridge support. Wasn't atombios, which DC apparently still depends on, supposed to make such OEM woes go away? Or is this one of the things not hardcoded in the BIOS? If so, where is the documentation so that users can at least attempt to fix this issue?

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            • #16
              Originally posted by libv View Post
              In another thread about raven ridge, Bridgman and Alex blame the device makers for the poor raven ridge support. Wasn't atombios, which DC apparently still depends on, supposed to make such OEM woes go away? Or is this one of the things not hardcoded in the BIOS? If so, where is the documentation so that users can at least attempt to fix this issue?
              Are you still bitter about it? Jesus man, is 2018 already, time to move on.

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              • #17
                Originally posted by Chewi View Post
                Software decoding existing for some (or all?) of these formats. The only film I've encountered that didn't include one of the older codecs was Ghost in the Shell. I think it was DTS-MA and VLC stuttered all over the place due to some bug that's probably fixed now. Fortunately mplayer had no trouble.
                As far as I know, the only player that supports DTS-HD Master Audio software decoding is Kodi 17, VLC can only play Dolby TrueHD (which you will find on fewer discs), Dolby Atmos or DTS-X can only pass-throughed with the Android version of Kodi and there is no software decoding yet.

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                • #18
                  Originally posted by debianxfce View Post
                  Do not waste poor APUs or any high performance computers cpu cycles to hdmi audio. Hdmi audio code is large and complex, see the source code. PC motherboards have had hifi quality analog audio outputs for a decade. Only the background music is mixed to back speakers in most of the movies, so multi channel audio is useless. Invest to a pair of good speakers.

                  My audio setup:
                  Amplifier: S.M.S.L SA-36A Pro
                  Speakers: B&W DM 601 S2
                  Those speakers were good stuff 15-20 years ago. Today the rubber has probably become brittle from age, and is visibly cracking when you move the elements. At least my DM603 S2 are. And technology has evolved as well. I have transitioned to active studio monitors and I am very happy with M-Audio BX5 carbon.

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                  • #19
                    Originally posted by libv View Post
                    In another thread about raven ridge, Bridgman and Alex blame the device makers for the poor raven ridge support. Wasn't atombios, which DC apparently still depends on, supposed to make such OEM woes go away?
                    What does atombios have to do with OEMs screwing up their board ROMs?

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                    • #20
                      Originally posted by libv View Post
                      In another thread about raven ridge, Bridgman and Alex blame the device makers for the poor raven ridge support. Wasn't atombios, which DC apparently still depends on, supposed to make such OEM woes go away? Or is this one of the things not hardcoded in the BIOS? If so, where is the documentation so that users can at least attempt to fix this issue?
                      The register headers are all public and support for all of these formats is in place in the driver. I pointed out the relevant code in both the hda driver the gpu driver in the bug report. Anyone that wants to can take a look at it.

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