Devices: Redrix (alderlake/brya family) and Pantheon (kabylake refresh/nami family)
Firmware: Full UEFI ROM (MrChromebox-2512.2 on Redrix and MrChromebox-2503.0 on Pantheon)
Both are convertible tablets with a 360º hinge. When rotating to tent or tablet mode in Windows, nothing happens at all, keyboard stays enabled, display doesn’t rotate, it continues behaving as a normal clamshell laptop.
The Pantheon rotates correctly in Linux (Fedora 43), so it’s not a firmware limitation. The Redrix I didn’t try Linux on (but it did work in its past life with Chrome OS)
crosec 2.0.6 is installed, as well as all other coolstar drivers (except audio/TB4 for now) and Intel drivers. I tried installing crossensors.inf from crosec package manually just in case, nothing changed.
OS is Windows 11 LTSC 26100.7627.
Is there a solution? Is the rotation/hinge sensors even supposed to work in Windows for these machines?
As it turns out, those two have different issues:
The Pantheon was a PEBCAK, I accidentally installed Google’s drivers from SDIO and those were overriding coolstar’s for ACPI/GOOG0006, the sensors device. It is now working on Windows.
The Redrix… I decided to test on a Fedora 43 LiveCD and… it doesn’t rotate at all there as well.
Then I found this (DriverIdentifier)[ Google Redrix Drivers ] from someone’s different Redrix, which shows the “[ACPI\VEN_GOOG&DEV_0006] Chromebook EC Sensor Hub” showing this device as installed.
Yet mine doesn’t seem to have this device at all?
Also found someone else with a (GitHub Issue)[ accelerometer is not working in redrix · Issue #879 · MrChromebox/firmware · GitHub ] that seems to be related, but it’s too light in details to be sure.
I’m attaching the cbmem log for the Redrix, as there might be something deeper going on.
cbmem redrix.txt.diff (307.7 KB)
edit: added more data in that GitHub issue above instead as it seems to be firmware issue by now.