On 01/12/2019 03:48 AM, espionage724(a)posteo.net wrote:
Welcome to coreboot fine sir :D
I have a KCMA-D8 motherboard with two Opteron 4226s,
(I assume you want to play games as you have a RX580)
You probably won't get decent gaming performance with these I would swap
them out for 4284's or 4240s I assume you want bulldozer cpus so you can
use libreboot ie: not needing microcode updates although I advise them
With 4284 (or the slightly faster but microcode updates mandatory 4386)
or what not and a RX580 8GB you should be able to max out new games
while gaming in a VM - let me know if you need help with that.
There are only a few games that are capable of using more than 8 cores
but the advantage of a second CPU is that you can do other stuff at the
same time without noticing as long as you use cpu pinning/isolcpus for
your vm gaming.
Another performance tweak is to combine half the modules of two CPU's to
obtain Turbo 2 performance on your gaming VM so with dual 4284's for
example you would get 3.7ghz rather than 3.3ghz or 3.7ghz on the first 4
cores and 3.3ghz on the last 4 cores in case you wish to do something
else on the second CPU while you are gaming.
For power consumption you should have nohz=on setting on your kernel
command line otherwise the modules will never enter CC6, pcie_aspm=force
is also another good one to have so is tweaking your CMOS settings for
power saving like enabling sata alpm and disabling 1394.
I also suggest obtaining:
FLR supporting SAS card as they are quite cheap right now on fleabay
either a $30 PIKE2008 to fit in the weird slot on the bottom or a $20
LSI SAS 9285 for the third PCI-e slot (On the D8 you can use the PIKE
slot or the third PCI-e slot but not both)
ASMB4 or ASMB5 module as they are hard to find, there is some on fleabay
for around $30 atm.
Btw have you heard of OpenPOWER? The raptor blackbird/talos 2? It is the
future of freedom computing now that new x86 is no longer free...gaming
is the the only reason to get a D8/D16 now that the blackbird is price
equivilant with much better performance.
and 6x4GB (24GB) Hynix HMT151R7BFR4C-H9 RAM sticks.
Maybe try cleaning the contacts if they look dirty? I had a ram training
issue due to dirty RAM contacts that didn't appear all the time and only
on coreboot not the propriatary bios for some reason but after cleaning
All my attempts of getting Coreboot to POST with this
board so far haven't worked. I'm compiling Coreboot from Git >(master branch),
and can build it without issue. > A pre-built Libreboot ROM (20160907) POSTs and boots
For Coreboot's config, I've tried including/excluding CPU microcode updates,
along with some less important-sounding options. For hardware, I've tried unplugging
> >everything external (KB/mouse), my GPU (RX 580), and only had a single RAM stick
in (slot A1). I've also tried a single CPU being powered (kept the 2nd CPU in but
>only had a single 4-pin CPU going to the 1st CPU).
There is your issue or at least one of them - you need dual 8pin EPS
cables - one per CPU - like I said in the wiki not 4pin cables and not
Anyway what does the console logs say? If you don't have one get a null
modem serial cable and hook it up to another PC to find out.
Can anyone else confirm Git builds of Coreboot booting on this board, or provide any tips
as to anything I could be missing?
It should I tested it a few months back although I use v4.6 on mine due
to some power consumption regressions in master.