[Asking for help] P40 with ASUS P8H67-M PRO about rebaruefi HOT 7 CLOSED

Does your PC POST with the P40 in if so you can just follow what's written. You don't even need to modify BIOS to do this

from rebaruefi.

You mean before making changes to the BIOS? Yes, the PC POSTs and ich can see the GPU with lspci. After patching the BIOS PC POSTs as well but I had no luck getitng the P40 to run. Then when trying to flash the DSDT patched ROM something went wrong. After that the PC didn't POST anymore with or without GPU. I hat to flash the patched (not DSDT patched) ROM vi SPI. My problem is that I don't know if this was just a random fail or if it was caused by the ROM. The sizes of all ROMs look good to me:

$ stat -c "%s %n" ROMs/*
4194304 ROMs/P8H67-M-PRO-ASUS-3904.ROM
4194304 ROMs/P8H67-M-PRO-ASUS-3904.ROM.dsdt.patched
4194304 ROMs/P8H67-M-PRO-ASUS-3904.ROM.patched

I am not sure what you mean with what's written. As fas as I understand I need to modify the BIOS to get above 4G decoding ans also I need DSDT patching which requires to flash the now twice patched ROM. Do I missunderstand thomething? Sorry for asking dump questions. And thanks for providing this.

from rebaruefi.

You do not need to flash BIOS

Disable 4G decoding and do the DSDT modification on #77 using grub or initrd to do the override

And try using 8GB RAM at first

from rebaruefi.

See https://github.com/xCuri0/ReBarUEFI/wiki/Sandy-and-Ivy-Bridge-32GB-BAR-DSDT-modification

from rebaruefi.

Thank you so much! The GPU works now with 8GB RAM. I don't understand in detail, what other restrictions a have to deal with but I am so glad that the GPU now does at least something. I will still have a look at your linked wiki article.

from rebaruefi.

Tried using more than 8GB RAM ?

The wiki guide is identical to what you did btw

from rebaruefi.

Yes, I tried 16GB but then again got these "BAR ... invalid .." messages.

from rebaruefi.