[Bug 2051050] Re: Audio balancing setting doesn't work with the cirrus codec

This bug is awaiting verification that the linux-xilinx-
zynqmp/5.15.0-1029.33 kernel in -proposed solves the problem. Please
test the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-jammy-linux-xilinx-zynqmp'
to 'verification-done-jammy-linux-xilinx-zynqmp'. If the problem still
exists, change the tag 'verification-needed-jammy-linux-xilinx-zynqmp'
to 'verification-failed-jammy-linux-xilinx-zynqmp'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-xilinx-zynqmp-v2 verification-needed-jammy-linux-xilinx-zynqmp

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https://bugs.launchpad.net/bugs/2051050

Title:
Audio balancing setting doesn't work with the cirrus codec

Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Committed
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Fix Released
Status in linux-oem-6.1 source package in Jammy:
Fix Released
Status in linux-oem-6.5 source package in Jammy:
Fix Released
Status in linux source package in Lunar:
Won't Fix
Status in linux source package in Mantic:
Fix Released
Status in linux source package in Noble:
Fix Committed

Bug description:
BugLink: https://bugs.launchpad.net/bugs/2051050

Currently this patch is in the linux-next, and will be in the
mainline kernel v6.8-rc2, there is no need to SRU this patch to Noble
kernel, Noble kernel will have this patch automatically.

[Impact]
In the gnome audio setting, if we adjust balancing setting, it doesn't
work at all on a Dell machine with cirrus codec, that is because with
the current driver, the exported amixer controls can't be handled by
pulseaudio.

[Fix]
Cherry-pick a mainline kernel patch, this could fix this issue.

[Test]
Booted with the patched kernel, move the bar to the left or right to
adjust the balance, we could hear the sound from left channel or right
channel accordingly.

[Where problems could occur]
This change will not create "Master Volume" amixer controls, probably
will make the audio control malfunction, that is we couldn't control
playback or capture volume correctly, but this regression possibility
is very low, we already tested the patch on the machines with cirrus
codec, they all worked well as before.

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