Hi there Ale, two suggestions: 1) check this thread -
https://www.reddit.com/r/coreboot/comments/jdcn5y/latest_coreboot_for_the_asus_kcmad8/
, you may have to revert a specific commit for a fresher coreboot
build 2) try to backport my XMP / custom RAM timings patch to KGPE-D16
related sources and then artificially raise the custom timings, hoping
that would make your PC more bootable
https://review.coreboot.org/q/topic:%22AMD_XMP%22+(status:open%20OR%20status:merged)

On Tue, Dec 22, 2020 at 4:48 PM Ale via coreboot <coreboot@coreboot.org> wrote:
>
> Hello everyone,
> I have a kgpe d16 motherboard with coreboot and seabios, and 2 opteron 6282 
> SE processor with 64 gb of RAM: all the modules are 16 Gb hynix HMT42GR7AFR4C 
> - RD and all are inserted into the orange slots. The problem is, if I add 2 
> additional modules, inside the last 2 orange slots, the machine doesn't 
> starts and only black screen is shown, no log is detected over COM port. Any 
> suggestion? Maybe another RAM module configuration is needed, because I read 
> that 192 Gb of RAM is possible to obtain (I have followed the official Asus 
> manual for the RAM-Slots configuration)
>
> Thank you very much
> Best regards
> Ale
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