Bao Le

Did you read the README? First, you need to install the catalina through the Olarila guide. Second, you apply my clover folder to your uefi partition. If you have panic...

@indrakitt please try to disable dsdt file, such as rename it to DSDT_BAK.

@indrakitt so if you do a fresh install with the Olarila guide, then would you boot up your device?

Did you set the DVMT to 64MB?

My clover was tested on the version 10.15.3, so I don’t know if it has issue with 10.15.4 I suggest you backup the clover first, then update your clover and...

@indrakitt please try this https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md#adjusting-the-brightness-on-a-laptop

Not tested this case yet. Becuz I don't have it.

> First, the internal display goes black during boot if I have my external display connected via HDMI, but if I boot without the external one and plug it in...

Did you use Catalina? The battery level is working well on Mojave. I have the same issue with you on Catalina.

The same issue. There is no solution for now. If you can fix it, feel free to send a pull request.