Bug 89479 - HDMI audio won't pass ac3 through another device
Summary: HDMI audio won't pass ac3 through another device
Status: RESOLVED MOVED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
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Reported: 2015-03-07 00:15 UTC by Chris Adams
Modified: 2019-11-19 09:02 UTC (History)
0 users

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Description Chris Adams 2015-03-07 00:15:48 UTC 
I have an AMD E-350 system (Radeon HD6310).  When I connect it directly to my receiver and play a file with AC3 audio, the receiver properly switches over to Dolby Digital decoding.  However, when I connect the HDMI to another device's pass-through (Vizio TV, Xbox One), the receiver stays in stereo mode and I get garbage audio.  Other devices can send Dolby Digital through (e.g. I tried a TiVo Roamio through the Vizio TV), so I know it can be done.

I'm guessing there's some bit of HDMI handshake not happening when the Radeon tries to switch modes and is connected to another device, but I don't know how to debug that.  Please let me know what I can do to figure this out.

I'm testing this with a trailer downloaded from hdtrailers.net, playing with either XBMC or VLC.
Comment 1 Chris Adams 2015-03-07 00:19:50 UTC 
Sorry, left out that this is a Fedora 20 x86_64 system, up to date with Linux kernel 3.18.8.
Comment 2 Martin Peres 2019-11-19 09:02:14 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/592.

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