I have a couple of older Intel Boxes. One running a x5-Z8350 (HD Graphics (Cherrytrail)) and the other a Celeron N3150 (Intel(R) HD Graphics 400 (Braswell).
Both were previously running fine using some old builds based upon Linux kernel 4.19.
I created a new fresh USB boot using 9.2.2 and fired it up on each box.
On the x5-Z8350 I end up with a blank screen other than a few lines showing errors, all very similar such as:
[ 0.37032] ACPI Bios error (bug) failure creating named object [\SB.STR3], AE_ALREADY_EXISTS (20190215/dswload2-324)
On the N3150, there is just a black screen.
On both boxes however, I was able to SSH with WinSCP, which seemed to indicate a successful boot process.
I also ran the command kodi-send --host=127.0.0.1 -a "TakeScreenshot" and to my surprise, it captured the full Estuary opening screen.
The same USB build works fine on machines with an old Core i7-2630Q or newer N3350 or N4200.
Trying various older builds I find that anything based upon Linux kernel 5 or above will not work but anything prior to that works.
Searching for info regarding the ACPI bios error doesn't yield anything that specifically answers the question as to what it is any why it occurs.