It sounds like you’ve pretty thoroughly covered the bases. The only thing I can think of that it might be is a lid cable issue, and we can’t see anything beyond the tests you’ve run, so it does require support to step in and take a look at your logs.
There is a list of tests that we’ve put together for checking for potential lid cable issues below, but it sounds like you might have run through most of them already. (You can check it to see if you missed anything.)
Keep in mind, we’re just guessing and eliminating other common issues. Hope that’s all it is, it’s a fairly simple fix.