[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         QA Contact|xorg-team@lists.x.org       |
           Assignee|xorg-driver-ati@lists.x.org |dri-devel@lists.freedesktop
                   |                            |.org
          Component|Driver/Radeon               |DRM/Radeon
            Product|xorg                        |DRI

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

Timo Valtoaho <timo.valtoaho@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |bisected, regression

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

Dieter Nützel <Dieter@nuetzel-hh.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #1 from Dieter Nützel <Dieter@nuetzel-hh.de> ---
Hello Timo,

would you be so kind to copy all your findings from bugzilla over, here?
This is _the right_ place for drm/radeon/amdgpu driver bugs.

I think Alex would have a look, then (his commit).
Linux Kernel commit : d57c0edfe00d3274b50f91ce3076ed0e82d28782

Greetings,
Dieter

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #2 from Timo Valtoaho <timo.valtoaho@gmail.com> ---
Ok, here is the original bug report:

After switching to 4.2 series, I noticed that audio through HDMI was gone after
first suspend/resume cycle (systemctl suspend). I can get audio back with some
simple operations, like executing xrand, lanching gnome-control-center or
swithcing to a virtual terminal (ctrl+alt+F1). All of these operations will
restore audio.

I have tested this out, and it was 4.2-rc2 that introduced this issue, and is
still present in 4.3-rc7. Also, it doesn't matter whether radeon driver is a
module or compiled in with required firmware.

System is Debian Jessie (8.2), Gnome

Attached files:

output of scripts/ver_linux
output of lspci -vvv

***********************************

Now, as time has gone by, Debian Jessie is v8.6 and due to my upgraded yet
still old hardware, lspci output differs. Regardless of those, problem still
persists. Radeon HW is still the same though.

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #3 from Timo Valtoaho <timo.valtoaho@gmail.com> ---
Created attachment 128613
  --> https://bugs.freedesktop.org/attachment.cgi?id=128613&action=edit
Output of scripts/ver_linux

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #4 from Timo Valtoaho <timo.valtoaho@gmail.com> ---
Created attachment 128614
  --> https://bugs.freedesktop.org/attachment.cgi?id=128614&action=edit
Output of lspci -vvv

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #5 from Timo Valtoaho <timo.valtoaho@gmail.com> ---
Created attachment 128615
  --> https://bugs.freedesktop.org/attachment.cgi?id=128615&action=edit
Current kernel config

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #6 from Timo Valtoaho <timo.valtoaho@gmail.com> ---
git bisected this to d57c0edfe00d3274b50f91ce3076ed0e82d28782.

Reverting this solves the problem on all kernels including latest 4.9.0.

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #7 from Felix Schwarz <felix.schwarz@oss.schwarz.eu> ---
(In reply to Timo Valtoaho from comment #6)
> git bisected this to d57c0edfe00d3274b50f91ce3076ed0e82d28782.

commit d57c0edfe00d3274b50f91ce3076ed0e82d28782
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Wed Jul 8 14:08:12 2015 -0400

    Revert "Revert "drm/radeon: dont switch vt on suspend""

    This reverts commit ac9134906b3f5c2b45dc80dab0fee792bd516d52.

    We've fixed the underlying problem with cursors, so re-enable
    this.


That is interesting as I have a Radeon 6450 which displayed "strange" colors
after suspend (often but not always) and the problem was caused exactly by the
same commit. However with my card I never had problems with HDMI audio after
suspend.

I never filed a bug report as I could work around the issue by switching the VT
manually (e.g. Ctrl+Alt+F2 / Ctrl+Alt+F1). Even better: After moving to Wayland
(F25) I did not notice the bug anymore.

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #8 from Felix Schwarz <felix.schwarz@oss.schwarz.eu> ---
Btw: bug 98832 is about a different issue but also fixed by reverting the
commit in question.

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

--- Comment #9 from Felix Schwarz <felix.schwarz@oss.schwarz.eu> ---
Maybe a different bug but since I switched to Wayland (F25) I noticed that HDMI
audio (Radeon HD6450) is also gone for me after suspend/resume. Never noticed
that with X though. Switching VTs does not change anything for me but that
might be due to using Wayland.

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[Bug 99163] Radeon HDMI audio lost after resuming from suspend on kernel >4.2

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https://bugs.freedesktop.org/show_bug.cgi?id=99163

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

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

--- Comment #10 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/765.

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