Post #108 ??
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https://bugs.launchpad.net/bugs/2009136
Title:
No HDMI audio under 5.19.0-35 & -37 (regression from -32)
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Jammy:
Invalid
Status in linux source package in Kinetic:
Fix Released
Bug description:
[Impact]
For amdgpu/i915, hdmi audio output device has disappeared.
[Fix]
The latest fix for the non-contiguous memalloc helper changed the
allocation method for a non-IOMMU system to use only the fallback
allocator. This should have worked, but it caused a problem sometimes
when too many non-contiguous pages are allocated that can't be treated
by HD-audio controller.
As a quirk workaround, go back to the original strategy: use
dma_alloc_noncontiguous() at first, and apply the fallback only when
it fails, but only for non-IOMMU case
[Test Case]
1. boot with kernel applied the patches.
2. check the cards in /proc/asound/cards.
Get the hdmi cards.
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xe2320000 irq 137
1 [HDMI ]: HDA-Intel - HDA ATI HDMI
HDA ATI HDMI at 0xe2260000 irq 134
[Where problems could occur]
Low, this is just workaround and may have a better solution in the future.
[Misc]
All patches has been landed on OEM-6.1 and lunar.
~~~~~~
CLARIFICATION: Just to avoid any confusion for those coming to this bug
report; the "Jammy: invalid" status above does *not* mean that this bug doesn't
affect jammy -- it does, and the kernel team is aware of this. All it reflects
is that the fix has to go into the kinetic kernel package which will then flow
into the kernel-hwe package implicitly.
Currently known affected cards:
* HD 7700 (comment 8)
* R9 290 (comment 21)
* RX 550 (LP: #2012141, and comment 27)
* RX 570 (mine)
* RX 580 (LP: #2009276, and comment 28)
* WX 3200 (comment 29)
* RX 6600 (LP: #2009542)
* RX 6700 (LP: #2009275)
[ Original Description ]
After upgrading my Ubuntu jammy (22.04) desktop to the -35 release of
the kernel, I found my HDMI audio output device had disappeared.
Reverting to the -32 release caused it to appear again (hence why I'm
filing the bug against the kernel rather than pulseaudio). I'm
attaching the dmesg output from immediately after booting each kernel,
but after a bit of trimming and diffing I *think* the following lines
are the salient ones:
input: HDA ATI HDMI HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input12
input: HDA ATI HDMI HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input13
input: HDA ATI HDMI HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input14
input: HDA ATI HDMI HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input15
input: HDA ATI HDMI HDMI/DP,pcm=10 as
/devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input16
input: HDA ATI HDMI HDMI/DP,pcm=11 as
/devices/pci0000:00/0000:00:03.1/0000:2b:00.1/sound/card0/input17
snd_hda_intel 0000:2b:00.1: bound 0000:2b:00.0 (ops
amdgpu_dm_audio_component_bind_ops [amdgpu])
These lines appear in the dmesg of the -32 kernel, but not in the -35
kernel's log. Meanwhile, the following lines appear in the -35
kernel's log but not in the -32:
hdaudio hdaudioC0D0: no AFG or MFG node found
snd_hda_intel 0000:2b:00.1: no codecs initialized
I'll also attach the output of "pactl list" under each kernel (this
shows the HDMI audio sink showing up under -32, but not -35) just in
case that helps shed any light on things.
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