Hello,
So the same thing happened after switching all power modes to Performance. But this time I did not need to plug in my external monitor for it to reactivate the built-in display. I plugged and unplugged the power cable a few times, and then just left the laptop open for a few minutes after trying to turn it on and then the login screen eventually appeared.
This is the output after entering that terminal command:
00:02.0 VGA compatible controller [0300]: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] [8086:9a49] (rev 01)
I didn’t see “Fast Boot” as a BIOS option, but I will look for that. I did make sure Secure Boot was off though.
If the Fast Boot option is not present, I will try the kernel-server command. Is this just for testing to isolate the differences between the main Rock version and this alternate server version to see if there is a file that works better in the server version that can be replaced in the main Rock version? Or would I need to manually select the Advanced Options every time I restart my computer? This brings up a point that may help the diagnosis. The issue happens before grub2 even loads. It also happens before the lenovo boot splash screen. When it happens, the lack of backlight makes nothing visible. It isn’t a case where the manufacturer boot splash screen is normal then the backlight turns off in the middle of one of the boot or loading processes. Just wanted to clarify that in case it helps narrow anything down.