| Bug ID | 103404 |
|---|---|
| Summary | HDMI Audio with RX Vega not working on drm-next-4.15-dc (devi= ce 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 | randomsalad@gmail.com |
Created attachment 134990 [details]=
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 lis=
ted
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 recei=
ver
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 e=
ach.
Created att=
achment 134991 [details]
Parsed edid output for the receiver.
Created attachment 134992 [details]
Parsed edid output for the monitor, connected via DP.
Created attachmen=
t 134993 [details]
cat /proc/asound/card0/eld#0.*
I have exactly the same problem here with a rx vega 56 and rx = vega 64
It looks like we missed this when bringing up Vega. We got a p= atch in the works. It should land sometime this week.
Thank you for your quick response, I am glad to hear that a p= atch will be there soon
| What | Removed | Added |
|---|---|---|
| CC | sunpeng.li@amd.com |
Created attachment 135191 [details] [review] [PATCH 1/2] drm/amd: Add DCE12 resource strap registers
Created attachment 135192 [details] [review] [PATCH 2/2] drm/amd/display: Read resource_straps from registers for DCE12<= /pre>
@randomsalad, I've attached the patches. Please let me kno= w if they resolve the issue.
Created attachme=
nt 135197 [details]
Compilation error for the patch
The proposed patch doesn't compile when applied to an otherwise clean versi=
on
of drm-next-4.15-dc (commit id 9b38bd1b8f5c874c3d1f330e0dcf4e7d84137477 at =
time
of writing). Does it rely on other changes present on the WIP branch? I've
attached the compilation errors.
Whoops, seems I blundered and didn't see there was not one, bu= t two different patch files. The compilation succeeds now, will proceed to testing it.
I can confirm the patch works, and was the only thing missing = to get HDMI audio working on my Vega card. I can confirm it works for atleast 5.1 and 2.0 cha= nnel audio as those are the only options available to me with my Receiver, though this was just what I needed. Thanks!
| What | Removed | Added |
|---|---|---|
| Resolution | --- | FIXED |
| Status | NEW | RESOLVED |