[Bug 70176] New: Radeon audio over HDMI doesn't work (kernel 3.11.1, 3.12 rc3)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70176

          Priority: medium
            Bug ID: 70176
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Radeon audio over HDMI doesn't work (kernel 3.11.1,
                    3.12 rc3)
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: dennisridder at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Hello,

I have tried to get audio over HDMI working with two of the latest kernels,
adding radeon.audio=1 in GRUB.

Kernel 3.11.1 (as supplied on XBMC forum with several patches incl. HD audio
related ones):
No message of audio being enabled in dmesg.

Kernel 3.12 RC3 reports back:
[drm] Enabling audio 0 support
[drm] Enabling audio 1 support
[drm] Enabling audio 2 support
[drm] Enabling audio 3 support
[drm] Enabling audio 4 support
[drm] Enabling audio 5 support

The devices and cards are detected and listed with "aplay -L", unmuted every
channel through alsamixer.
I tried getting noise out hitting "aplay -D (plug)hw:0,3" but physical sound is
not being produced.

I already tried "xrandr --output HDMI-0 --set audio auto" (or "on", "1", etc)

As a reference, everything is working with the Catalyst drivers, so it's not a
hardware flaw.

Uncensored dmesg logs:
http://paste.ubuntu.com/6196722/
http://paste.ubuntu.com/6197292/

Please help! Let me know if you need more information from me to get to the
bottom of this.

P.S. I am having this issue together with screen artifacts in XBMC, for which I
will file another bug.

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