[Bug 111492] HDMI audio is unavailable with amdgpu on R9 270

* [Bug 111492] HDMI audio is unavailable with amdgpu on R9 270
@ 2019-08-26 20:03 bugzilla-daemon
  2019-08-26 20:33 ` bugzilla-daemon
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-08-26 20:03 UTC (permalink / raw)
  To: dri-devel

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https://bugs.freedesktop.org/show_bug.cgi?id=111492

            Bug ID: 111492
           Summary: HDMI audio is unavailable with amdgpu on R9 270
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: not set
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: marti@juffo.org

Video card: ASUS Radeon R9 270
Kernel: 5.2.9-arch1-1-ARCH

I recently had some issues with the "radeon" driver and discovered that the
"amdgpu" driver now has support for Southern Islands (SI) GPUs using the
amdgpu.si_support=1 boot flag.

Graphics stuff works great with amdgpu so far, however, all HDMI audio outputs
are marked as "(unplugged) (unavailable)" in the pavuctl utility.

Someone else's screenshot with similar issue: https://i.imgur.com/67HYPG3.png
Initially this issue seemed related to bug 107835, but Alex Deucher said that's
not the case.

alsa-info.sh debug dump uploaded to:
http://alsa-project.org/db/?f=bd09f9bd5cdadc129852d2f4487aec9f22d9b915

There is nothing in kernel logs to indicate issues. Grepping for relevant
keywords in dmesg gives this:

[    0.145413] Kernel command line: initrd=\initramfs-linux.img
root=UUID=93067a3f-2c68-4e1a-9f3a-96cdc0221771 rw acpi_enforce_resources=lax
iommu=pt radeon.si_support=0 amdgpu.si_support=1 amdgpu.dc=1 radeon.audio=1
...
[    3.910423] input: HDA ATI HDMI HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:03.1/0000:09:00.1/sound/card0/input4
[    3.910454] input: HDA ATI HDMI HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:03.1/0000:09:00.1/sound/card0/input5
[    3.910480] input: HDA ATI HDMI HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:03.1/0000:09:00.1/sound/card0/input6
[    3.910513] input: HDA ATI HDMI HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:03.1/0000:09:00.1/sound/card0/input7
[    3.910547] input: HDA ATI HDMI HDMI/DP,pcm=10 as
/devices/pci0000:00/0000:00:03.1/0000:09:00.1/sound/card0/input8
[    3.910579] input: HDA ATI HDMI HDMI/DP,pcm=11 as
/devices/pci0000:00/0000:00:03.1/0000:09:00.1/sound/card0/input9
...
[    4.110170] [drm] amdgpu kernel modesetting enabled.
[    4.110310] amdgpu 0000:09:00.0: remove_conflicting_pci_framebuffers: bar 0:
0xe0000000 -> 0xefffffff
[    4.110312] amdgpu 0000:09:00.0: remove_conflicting_pci_framebuffers: bar 2:
0xfcf00000 -> 0xfcf3ffff
[    4.110313] amdgpu 0000:09:00.0: vgaarb: deactivate vga console
[    4.110485] amdgpu 0000:09:00.0: kfd not supported on this ASIC
[    4.120150] amdgpu 0000:09:00.0: No more image in the PCI ROM
[    4.121491] amdgpu 0000:09:00.0: VRAM: 2048M 0x000000F400000000 -
0x000000F47FFFFFFF (2048M used)
[    4.121492] amdgpu 0000:09:00.0: GART: 1024M 0x000000FF00000000 -
0x000000FF3FFFFFFF
[    4.121557] [drm] amdgpu: 2048M of VRAM memory ready
[    4.121560] [drm] amdgpu: 3072M of GTT memory ready.
[    4.123745] amdgpu 0000:09:00.0: PCIE GART of 1024M enabled (table at
0x000000F400300000).
[    4.124929] [drm] amdgpu: dpm initialized
[    4.125034] [drm] AMDGPU Display Connectors
[    4.502455] fbcon: amdgpudrmfb (fb0) is primary device
[    4.779046] amdgpu 0000:09:00.0: fb0: amdgpudrmfb frame buffer device
[    5.237526] [drm] Initialized amdgpu 3.32.0 20150101 for 0000:09:00.0 on
minor 0

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