I don't know if it's the same issue; but there is another relatively
similar issue that occurred very recently: bug #2070096

As I mentioned there, this commit is at least PART of the problem:

commit 15c983d0cbb5a158eafb9cb88e6d8dfc4477d9c2
Author: Melissa Wen <[email protected]>
Date: Fri Dec 29 15:25:00 2023 -0100

    drm/amd/display: fix bandwidth validation failure on DCN 2.1

    BugLink: https://bugs.launchpad.net/bugs/2059068

    commit 3a0fa3bc245ef92838a8296e0055569b8dff94c4 upstream.

    IGT `amdgpu/amd_color/crtc-lut-accuracy` fails right at the beginning of
    the test execution, during atomic check, because DC rejects the
    bandwidth state for a fb sizing 64x64. The test was previously working
    with the deprecated dc_commit_state(). Now using
    dc_validate_with_context() approach, the atomic check needs to perform a
    full state validation. Therefore, set fast_validation to false in the
    dc_validate_global_state call for atomic check.

    Cc: [email protected]
    Fixes: b8272241ff9d ("drm/amd/display: Drop dc_commit_state in favor of 
dc_commit_streams")
    Signed-off-by: Melissa Wen <[email protected]>
    Signed-off-by: Hamza Mahfooz <[email protected]>
    Signed-off-by: Alex Deucher <[email protected]>
    Signed-off-by: Greg Kroah-Hartman <[email protected]>
    Signed-off-by: Portia Stephens <[email protected]>
    Signed-off-by: Stefan Bader <[email protected]>


That commit was reverted upstream:

https://git.kernel.org/torvalds/c//c2ab9ce0ee7225fc05f58a6671c43b8a3684f530

And that commit did go back to stable:
https://git.kernel.org/stable/c/6266b3a312b7f69c883c2d7c82d85772464421d2

So I guess Canonical team missed it.

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https://bugs.launchpad.net/bugs/2070020

Title:
  Lenovo dock no longer working after upgrade from 6.5.0-35 to 6.5.0-41

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