I use Clear Linux on a Intel NUC8i7BEH with most recent BIOS from Intel.
Since yesterday system Clear Linux installed on second SSD doesn’t boot anymore.
A new line/message on top left corner appears: “SHA256 validated”. Then booting stops. Pressing key F2, F7, F10 etc. to enter BIOS doesn’t work anymore. Only hard power-off pressing power button for more than 4 seconds.
Before Clear Linux booted with no problems. Didn’t change BIOS settings. Only software updates.
Can enter power-switch menu pressing power button for 3 seconds. From there I can choose second installed Fedora on primary NVME and boot into Fedora.
How to get back booting into Clear Linux?
Addition 1: When message/line “SHA256” appears on left top corner keyboard seems to be switched off, powered off, not connected. No LED for NUM lock. Key combination ( Ctrl + Alt + Del ) not working.