CHUWI GemiBook XPro - no video

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Well-known member
Dec 26, 2020
This laptop uses AMI UEFI. I enabled CSM and Legacy boot options. When I boot it to my InitDisk flash drive, the screen stays black. It booted successfully though, because when I do things like ECHO HELLO > CHUWI.TXT, that file gets created. I tried running MODE 80, but nothing happened. Legacy USB support is enabled by default.

This thing has hundreds of UEFI settings I can tweak, many of which cause it to no longer POST. I've had to pull the battery a few times. One of the options that breaks it is the Video Option ROM. It defaults to UEFI, and changing it to Legacy completely disables video output (can't even get back into the UEFI menu). Am I correct in assuming that this is the critical setting that's keeping me from getting video output in FreeDOS, or could it be one of the other settings?

I've tried running SpinRite, but the screen stays blank, and no log is created. The most I've gotten is an empty DBG file with PR506 DIAGS VIDEO AUTO EXIT LEVEL 1 NEVER TYPE AHCI #0 #0.