Hello beautiful community!
I’d like to start off saying that I’m really sorry if I’m starting a new post for something that is already being discussed for a while. Also, I am really confused with this forum format and I’m kinda loss . (Been brought to "The VFIO and GPU Passthrough Beginner's Resource and I don’t get where I can ask questions )
Alright, now with the subject at hand. I’ve been trying for a little over 12-13 hours to figure out how to setup my passthrough KVM. The thing is, I have two identical GPUs (GTX 1070) and it’s being one hardcore puzzle for me so far. I’ve followed a couple of tutorials and forums but I’m starting to get alienated .
Tutorials I’ve followed so far:
I’ve managed to get everything in order up to the point where I regen my initramfs (mkinitcpio -p linux56) but when I reboot, it gives me the
sh /usr/bin/vfio-pci-override.sh Permission Denied echo. I tried chmoding the script with 777 but still brings me the permission denied. I asked for help on the manjaro forum and a nice guy brought me here.
The last of the three tutorials I linked seems to have found a solution. Although I do not understand much of it. How can I append
pcie_acs_override=downstream,multifunction to my boot? Also, will I have to manually shutdown the second iommu group at each boot? Is there any step-by-step tutorials for identical GPUs on manjaro that I missed?
I wouldn’t mind restarting from scratch (already at my 3rd reinstallation of manjaro). Also I’d like to keep the second 1070 since the only other GPU that I have is a downgrade. I’d really like this to work since I don’t want to duel-boot anymore. Windows is kind of a pain (pc-breaking updates and having to reboot only to play a game).
Here’s my build:
- Z170a PC Mate (updated bios and vt-d stuff enabled)
- Manjaro 20.0 64bit XFCE (uefi and linux56 kernel)
- i3 7100 (not overclocked)
- 16Gb DDr4 @3200Mhz
- 1000w Corsair RM1000i
- 1Tb m.2 Drive
- 2x GTX 1070 using proprietary drivers
Here’s my post on manjaro’s forum just in case: (https://forum.manjaro.org/t/i-need-help-about-vfio-using-two-identical-gpus/141058). I’d be happy to provide any information missing if needed. Thanks in advance for any help provided! Looking forward to enjoy a beautiful build without Billy G’s vulnerable OS on my grub .
Have a wonderful day to y’all and stay safe in this current situation!