High Sierra suddenly goes off

[leonado]

I think as a last resort I would start over as fresh install. Get as much info as you can.
I had this once on another OS using a WiFi usb stick. It would run just fine, but then out of the blue shutdown. I finaly got a Lan extension and used that. No more shutdowns.

 

[jaimicox]

I just changed the video card, for an RX 6600, I have noticed an improvement in performance, but the video still does not look correct, how do I enable the card in my system? thank you

 

[Feartech]

I just changed the video card, for an RX 6600, I have noticed an improvement in performance, but the video still does not look correct, how do I enable the card in my system? thank you

normally just by adding boot argument:
agdpmod=pikera

 

[jaimicox]

I just did, installing Lilu and WhateverGreen in EFI/Clover/Kext/Others

 

[Feartech]

I just did, installing Lilu and WhateverGreen in EFI/Clover/Kext/Others

may need to zip and upload your EFI

 

[jaimicox]

may need to zip and upload your EFI

Thanks

 

[Feartech]

Thanks

NvidiaWeb should be set to false

also remove any nvidia drivers/software

oh, also you need to run Monterey for it to work properly

if you do upgrade, then you will also need to do:
https://www.tonymacx86.com/threads/...to-usb-port-configuration.286553/post-2029768

 

[jaimicox]

I just uninstalled the Nvidia Driver, and set NvidiaWeb to false. I am going to update to Monterrey, but I would like to know if I can have the graphics card working correctly in high sierra, to make a backup of the files and browse for a few days, since I see a lot of interference in the video at the moment.

Thanks

 

[Feartech]

I just uninstalled the Nvidia Driver, and set NvidiaWeb to false. I am going to update to Monterrey, but I would like to know if I can have the graphics card working correctly in high sierra, to make a backup of the files and browse for a few days, since I see a lot of interference in the video at the moment.

Thanks

no, you will need to use Monterey