https://bugs.freedesktop.org/show_bug.cgi?id=103404
Bug ID: 103404
Summary: HDMI Audio with RX Vega not working on
drm-next-4.15-dc (device listed as unconnected)
Product: DRI
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: DRM/AMDgpu
Assignee: dri-devel@lists.freedesktop.org
Reporter: randomsa...@gmail.com
Created attachment 134990
--> https://bugs.freedesktop.org/attachment.cgi?id=134990&action=edit
dmesg output filtered to show drm messages
When using a DC-patched kernel (the drm-next-4.15-dc branch to be specific),
HDMI audio output on RX Vega does not work, as the device(s) are simply listed
as unconnected.
Audio over DisplayPort works, but the second device (A 5.1 Surround Sound AV
Receiver) does not register as an audio-output.
It doesn't matter which port is used; All 4 physical monitor outputs (3
DisplayPorts, 1 HDMI), when connected to another device, be it the AV receiver
or the monitor, fails to register any audio outputs. Only
DisplayPort->DisplayPort works.
The attached dmesg log file shows both devices being connected and detected as
audio outputs by drm, including the number of configurations available on each.
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