I tested on both.  Both are a pass, but it's a bit of a confusing result
because the test plan didn't account for a refactor that occurred.  Let
me explain it.

$ uname -r
6.14.0-1018-oem
$ sudo dmesg | grep seamless -i
[    4.499713] [drm] Seamless boot condition check passed

In mainline kernel there was a refactor in the DC code that introduced the 
logging that was looked for.  This refactor and message isn't present in 
OEM-6.14 code base.  But I did verify functionally it worked right.  Here are 
the two refactor commits.
https://git.kernel.org/torvalds/c/16ca828617109
https://git.kernel.org/torvalds/c/5f7e384ab56e1

$ uname -r
6.17.0-1008-oem
$ sudo dmesg | grep seamless -i
[    4.187914] amdgpu 0000:c5:00.0: [drm:amdgpu_dm_init [amdgpu]] Seamless boot 
requested
[    4.345913] amdgpu 0000:c5:00.0: [drm:mark_seamless_boot_stream [amdgpu]] 
Marked stream for seamless boot optimization
[    4.381269] amdgpu 0000:c5:00.0: [drm:mark_seamless_boot_stream [amdgpu]] 
Marked stream for seamless boot optimization

This one visibly looked right and logs showed it.

** Tags removed: verification-needed-noble-linux-oem-6.14 
verification-needed-noble-linux-oem-6.17
** Tags added: verification-done-noble-linux-oem-6.14 
verification-done-noble-linux-oem-6.17

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https://bugs.launchpad.net/bugs/2134488

Title:
  Seamless boot doesn't work on Strix or Strix Halo

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