I saw in another thread folks thought macOS 15.2 would fix the issue, however, I upgraded yesterday, and once again my system crashed. This time the message in the system crash dialog is:
panic(cpu 10 caller 0xfffffe003500b7c4): Sleep transition timed out after 35 seconds while calling power state change callbacks. Suspected bundle: com.apple.iokit.IOThunderboltFamily. Thread 0x1bf96.
Any ideas? I have the tech support report generated if it's useful.
Yes you can attach a support file. If the site does not allow it, try zipping it.
I don't think this was fixed in 15.2, but will check it out.
Here you are, as site won't upload the file zipped or unzipped). I thought this thread implied it was fixed, but maybe I misread.
This may take time to investigate and we will report it to Apple again. If I need a System Diagnostic, I will let you know. Set system not to sleep in the meantime, sorry. (or unmount/disconnect)
I can't upload a .supt or a .zip file (I get file not supported), and renaming it doesn't work. I tried giving a link to Dropbox but that reply was moderated to remove it. How can I get you a file?

