[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

            Bug ID: 92827
           Summary: Tonga: No Sound over HDMI with connected AV receiver
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: winlux@gmail.com

Created attachment 119417
  --> https://bugs.freedesktop.org/attachment.cgi?id=119417&action=edit
cat /proc/asound/card1/eld#0.0

I'm using the new amdgpu driver on Linux 4.2 and 4.3 RC7 with my new Radeon R9
380.
I want to use my 5.1 receiver to get audio over HDMI, it works just fine under
Windows 8.1. Under Manjaro Linux, I have configured a standard FullHD output on
HDMI with 60 Hz – with my former Radeon HD 7770 using radeonsi this was the
rule to get audio (don't get me started on broken HDMI audio on radeonsi. With
Linux 4.0+ until now, I needed to use the 3.18 kernel to *not* see only
"unplugged" outputs in PulseAudio. See bug 90777.).
In fortunate distinction to radeonsi on Linux 4.0+, PulseAudio shows 2.0, 5.1
and 7.1 output over HDMI as plugged in and available. But I don't get any
output.
No HDMI audio output on Tonga using amdgpu on Linux 4.2 and 4.3 RC7.

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #1 from Maximilian Böhm <winlux@gmail.com> ---
I can still confirm this bug with Linux 4.6.0. :(

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
Audio support requires DAL which is not upstream yet.  E.g.,
https://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-4.7-wip-dal

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #3 from Maximilian Böhm <winlux@gmail.com> ---
At least something to await for! Would be neat to put this info somewhere in a
non-dev press release. I fiddled many hours with this issue without knowing
anything about the state of HDMI audio on AMDGPU. There must be countless
frustrated users, even more when you think of the Ubuntu 16.04 shift away from
fglrx.

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #4 from dwagner <jb5sgc1n.nya@20mm.eu> ---
JFYI: HDMI audio output works fine with amdgpu as present in current
https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #5 from Michael Zapf <forums09@mizapf.de> ---
I just got kernel 4.14, but I still don't have any audio output via HDMI. Is
that supposed to work by now?

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #6 from Maximilian Böhm <mabo@elbmurf.de> ---
No, it will be merged with Linux 4.15 but you will still need an kernel
parameter:
https://www.phoronix.com/scan.php?page=news_item&px=AMDGPU-DC-Accepted
Until then, you have to compile yourself a patched kernel. For Arch-based
distros you can use the AUR linux-amd-staging-drm-next-git. Phoronix provides
pre-compiled packages for Ubuntu.

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #7 from Michael Zapf <forums09@mizapf.de> ---
With 4.15 (and the kernel boot parameter!) I now managed to get audio output
via HDMI. 

Splendid!

My configuration is 

PC ----HDMI---> Pioneer AV receiver (vsx330) ---HDMI---> HP monitor (lp2475w)

But there is one bad effect now: When I turn off the monitor during runtime, or
if the monitor enters power-save state, and it is turned on again, the screen
resolution is reset to a maximum of 1368x768 (before: 1920x1200), which messes
up the desktop.

The reason is that when the monitor is turned off, this seems to be sensed as a
change in the HMDI connection, and the EDID data is now coming from the AV
receiver. 

dmesg says:

[   82.689994] [drm] VSX-330: [Block 0] 
[   82.689995] [drm] VSX-330: [Block 1] 
[   82.689997] [drm] dc_link_detect: manufacturer_id = 2F41, product_id = 1027,
serial_number = 1010101, manufacture_week = 0, manufacture_year = 25,
display_name = VSX-330, speaker_flag = 79, audio_mode_count = 8
[   82.689998] [drm] dc_link_detect: mode number = 0, format_code = 1,
channel_count = 1, sample_rate = 127, sample_size = 7
[   82.689999] [drm] dc_link_detect: mode number = 1, format_code = 1,
channel_count = 7, sample_rate = 127, sample_size = 7
[   82.690000] [drm] dc_link_detect: mode number = 2, format_code = 2,
channel_count = 5, sample_rate = 7, sample_size = 80
[   82.690000] [drm] dc_link_detect: mode number = 3, format_code = 7,
channel_count = 6, sample_rate = 6, sample_size = 192
[   82.690001] [drm] dc_link_detect: mode number = 4, format_code = 9,
channel_count = 1, sample_rate = 127, sample_size = 0
[   82.690002] [drm] dc_link_detect: mode number = 5, format_code = 10,
channel_count = 7, sample_rate = 6, sample_size = 0
[   82.690002] [drm] dc_link_detect: mode number = 6, format_code = 11,
channel_count = 7, sample_rate = 126, sample_size = 1
[   82.690003] [drm] dc_link_detect: mode number = 7, format_code = 12,
channel_count = 7, sample_rate = 126, sample_size = 0
[   82.691002] Raw EDID:
[   82.691003]          c8 01 00 00 06 00 00 00 20 00 00 00 02 00 00 00
[   82.691003]          80 07 00 00 b0 04 00 00 01 00 0a 00 fc 05 e0 01
[   82.691004]          e0 04 00 00 00 00 00 00 01 00 01 00 00 00 02 00
[   82.691004]          00 00 00 00 00 0a 00 00 01 00 00 00 70 00 00 00
[   82.691004]          08 00 02 00 fc 05 e0 01 12 00 07 00 fc 05 e0 01
[   82.691005]          9b 01 00 00 04 00 00 00 20 00 00 00 01 00 00 00
[   82.691005]          04 00 00 00 01 00 0a 00 fd 05 e0 01 e0 04 00 00
[   82.691006]          00 00 00 00 1e 00 1e 00 00 00 02 00 00 00 00 00
[   82.691007] amdgpu 0000:01:00.0: HDMI-A-2: EDID invalid.

Note that the monitor is typically labeled as HDMI-A-1.

The screen configuration in KDE lists 1368x768 as the maximum resolution now. 

I managed to restore the old resolution either by rebooting, or by turning off
the AV receiver, then turning it back on. Still, the desktop is messed up.

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #8 from Alex Deucher <alexdeucher@gmail.com> ---
I suspect the receiver manufacturer never validated DPMS.  Most consumer
electronic devices (media players, DVD, Bluray, cable boxes, etc.) don't
actually blank the display.

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #9 from Christian König <ckoenig.leichtzumerken@gmail.com> ---
Yeah, that is a problem I still have with my AV-setup as well.

In general the fault is caused by the AV receiver not correctly implementing
the EDID handling (the timing turning things on/off is usually not correctly
validated/implemented).

We could do something like adding an option to re-query the EDID x seconds
after an hot plug event and compare if it's changed.

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[Bug 92827] Tonga: No Sound over HDMI with connected AV receiver

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #10 from Michael Zapf <forums09@mizapf.de> ---
I now believe there is a general problem with amdgpu's new DC. 

On another system, without an AV receiver in the chain, my display resolution
is reset to 1368x768 when I turn off the monitor and back on. That's a really
mess (not only my desktop after that). I have to reboot to get the full
resolution again; killing X or unplugging the monitor does not restore it.

Seems as if I have to turn off DC again and wait for a fix. <grmpf>

I have this issue in my office (RX460) and on my second PC (RX580),
reproduceably, all running openSUSE Tumbleweed, 4.15.1.

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #11 from Maximilian Böhm <mabo@elbmurf.de> ---
I feel your pain, I’m experiencing something similar here:
RX 580 → HDMI @ FullHD → Marantz NR1504 → [EDID-Fake-Plug]
RX 580 → DP @ UHD → Dell P2715Q.

Sometimes, when I turn the monitor off and on again, my desktop resolution is
reduced to 2048x1536 (this is not even 16:9) and I have no other option than
rebooting to get 3840x2160 again. This was new coming with the DC patches but
does not happen every time I turn the monitor off and on again, rather rarely,
but is endlessly annoying.

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

--- Comment #12 from Harry Wentland <harry.wentland@amd.com> ---
Looks like the conversation steered away from audio. 

Please use a new ticket or comment on existing tickets dealing with wrong
modes, such as https://bugs.freedesktop.org/show_bug.cgi?id=105046.

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https://bugs.freedesktop.org/show_bug.cgi?id=92827

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #13 from Martin Peres <martin.peres@free.fr> ---
-- 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/58.

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