Quote from: lopalcar on May 19, 2017, 04:36:06 PM

Just curious if someone else is having same problem...

First of all, I'm running last version of ubuntu server, everythings seems fine... 7 GPUs detected and working, but the problem is when I try to reboot the system, it doesn't comes back again, just goes to black screen...

I tried many different BIOS settings and also changed grub configuration in /etc/default/grub adding GRUB_CMDLINE_LINUX=reboot=efi or GRUB_CMDLINE_LINUX=reboot=cold, setting cold, allows me to see computer booting "bios setup message and even grub menu to choose options" but it doesn't loads the system...
Any ideas on how to proceed?

The only way for it to come back is rebooting from PSU, and that is not a solution for me...
Does anyone else have this issue?

NOTES: System installed and booting in UEFI mode, in BIOS, all windows compatible modes are disabled, with one GPU and "4G decoding" set to disable, it reboots properly.

I believe the problem is with your partitions.

I could manually edit them or explain how to do this; however the easiest solution is probably to just try using my amdOC_beta image and modifying it as desired.

If you know how to use gparted, you can simply download the image, image it to a usb, then replace the primary partition on the usb with your primary partition (as amdOCs first partition is properly setup to avoid the problem you are describing). The resulting usb should then boot without this problem.

Of course you might want to try my build as well (however I'm not sure if it will recognize a z170a properly off the bat).