[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

            Bug ID: 111416
           Summary: 4k 60hz on RX 560 over HDMI = no sound
           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: freedesktop@azelphur.com

Hi,

If I switch to 4k 60hz on my RX 560, sound instantly drops out.

I can enable/disable sound by running
`xrandr --output HDMI-A-0 --mode 3840x2160 -r 30`
`xrandr --output HDMI-A-0 --mode 3840x2160 -r 60`

No messages appear in dmesg or Xorg log when switching between 30/60hz. So I'm
not sure what information to provide with aiding debugging. Please let me know!

I'm using a custom modeline since 4k 60hz option is unavailable by default (see
bug #111412) this is the modeline I am using:

Modeline     "3840x2160" 594  3840 4016 4104 4400  2160 2168 2178 2250 +hsync
+vsync

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #1 from Alfie Day <freedesktop@azelphur.com> ---
For reference, my X version is 1.20.5
My Kernel is 5.2.8-arch1-1-ARCH
My Mesa version is 19.1.4

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your xorg log (if using X) and your dmesg output.  What kernel
are you using?  You monitor only supports 4k60 at yCbCr 4:2:0 encoding:
VIC 107 3840x2160@60Hz 64:27  HorFreq: 135000 Hz Clock: 297.000 MHz
Your custom modeline uses RGB encoding so probably uses too much bandwidth.

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #3 from Alfie Day <freedesktop@azelphur.com> ---
Created attachment 145089
  --> https://bugs.freedesktop.org/attachment.cgi?id=145089&action=edit
xorg log

Log of starting X (at 4k30hz) and then increasing to 4k 60hz

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #4 from Alfie Day <freedesktop@azelphur.com> ---
Created attachment 145090
  --> https://bugs.freedesktop.org/attachment.cgi?id=145090&action=edit
dmesg

Log of dmesg, starting at 4k 30hz and increasing to 4k 60hz

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #5 from Alfie Day <freedesktop@azelphur.com> ---
Thanks for getting back to me, I'm using this one right now:
https://aur.archlinux.org/packages/linux-amd-staging-drm-next-git/

I have tested on Arches standard kernel (5.2.8) and LTS kernel (4.19.67) all of
which have the same issue.

Apologies if this is user error. Sounds like you could be correct about my
modeline. I tried generating modelines using cvt and gtf but I couldn't get
xrandr to apply them (I'd get "xrandr: Configure crtc 0 failed" when I tried)

After much digging I found this post,
https://bugs.freedesktop.org/show_bug.cgi?id=104412#c14 and I'm using that
solution currently to get 4k 60hz.

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #6 from Alfie Day <freedesktop@azelphur.com> ---
Hi, based on your comment I went and plugged my nvidia machine into the TV
using the same cable and port. I then used xvidtune -show to extract the
modeline it was using: "3840x2160"   593.41   3840 4016 4104 4400   2160 2168
2178 2250 +hsync +vsync

I applied that modeline to the machine with the RX 560 in it, and still no
sound. However, I made a weird discovery while switching the cable between the
two machines. If I switch to 4k 60hz on the RX 560, then I pull the HDMI cable
out, and plug it back in again, I get sound at 4k 60hz. So that works as a
workaround. If I reboot, no sound again.

I have elimniated pulseaudio as a possibility by running

pasuspender -- speaker-test --nloops=1 --channels=2 --test=wav --device=hw:1,9

At 30hz, it works, at 60hz, it doesn't (Unless I replug the cable, then it
does)

I am attaching new dmesg and Xorg logs. Booting at 60hz (and thus having no
sound) and then replugging the HDMI cable (which gets me sound)

I can also simply turn my TV off and on again instead of unplugging /
replugging the cable, sound also works if I boot the computer with the TV off,
and then turn the TV on after X has started.

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #7 from Alfie Day <freedesktop@azelphur.com> ---
Created attachment 145091
  --> https://bugs.freedesktop.org/attachment.cgi?id=145091&action=edit
dmesg (with hotplugging)

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

--- Comment #8 from Alfie Day <freedesktop@azelphur.com> ---
Created attachment 145092
  --> https://bugs.freedesktop.org/attachment.cgi?id=145092&action=edit
Xorg log (with hotplugging)

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[Bug 111416] 4k 60hz on RX 560 over HDMI = no sound

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https://bugs.freedesktop.org/show_bug.cgi?id=111416

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

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

--- Comment #9 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/888.

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