[pulseaudio-discuss] Buzzy noise on HDMI using passthrough

Thomas Martitz kugel at rockbox.org
Mon Jun 1 14:47:15 PDT 2015

Am 14.05.2015 um 13:31 schrieb Arun Raghavan:
> On 12 May 2015 at 12:44, Thomas Martitz <kugel at rockbox.org> wrote:
>> Hello,
>> I've got a problem with new TV connected to a Zotac ZBOX with AMD APU via
>> HDMI. When playing movies in Kodi using the pass through option I can hear
>> only buzzy/white noise. The same setup worked fine on my previous TV.
>> However, if I use ALSA, then kodi and audio passthrough works just fine
>> (with either TV).
>> Does anyone know what's wrong here? I first thought the TV is broken, but
>> then how can it work with alsa?
>> I attached the output of pactl list and aplay -L. If I can provide more
>> information just tell me. Pulseaudio version is 6 from debian sid.
>> PS: I did select the "Digital Stereo (HDMI) Output" card profile because I
>> know passthrough does not work in multichannel configurations.
> White noise probably means that what's being sent out is not valid
> data, and is being interpreted as PCM. The logs you sent suggest
> nothing wrong.
> Does this work for you (you can get an AC3 file here -
> http://samples.mplayerhq.hu/A-codecs/AC3):
>    gst-launch-1.0 filesrc location=/a/file/with/ac3 ! ac3parse ! pulsesink
> Cheers,
> Arun

Unfortunately this also gives buzzy noise. Is there anything else I can 

Best regards

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