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Thnaks for the answer @LnxBil UI is not just slightly slower. It is very bad. I almost dont use the UI now and use ssh, even VSCode over ssh. I have 1 main VM. Most of the time I do not have much going on in parallel, but I love the option of starting second machine doing something there and...

I upgraded my cpu from 3900x to 4950x. And now I get screen tearing with my Ubuntu20 guest. I have 128GB ram 60 GB dedicated to this VM. Tried with another VM and have similar problem.

You are a genious. You actually pointed in the right direction. Pcie passthrough is the reason guest is stealing these hard drives from host. So the old address for GPU has changed, and hostpci0: 0000:0b:00,pcie=1 is now pointing to sata controller, GPU has moved to 0000:0c:.00. Thank you very much

@leesteken I was thinking it is small thing but it is getting stranger. I created a new vm and attached old vms image to it. From host I unmounted my 10 and 18 TB hard drives that are being affected. Still when I start the machine those hard disks disappear from lsblk. The latest weirdnes is...

Yes it is using, but it was working for months. I was reconfiguring the PC and messed up. But I found where it touches those disks. (I was wrong at this point) Thanks for your response.

I get weird situation Proxmox is installed on btrfs raid of 3 USB flash drives I have two additional btrfs raids on 2x18 TB and 2x15TB where I store data I have NVME where my images are When I start a vm from NVME for some reason my unrelated 15TB and 18TB btrfs raids disappear, lsblk does not...

Thanks for suggestion. It seems to be better now, I added pcie_acs_override=downstream ... into grub So I assume your point was right And that may explain why I was able ping but not ssh into the machine. Probably I was talking to the guest machine that is automatically started. I cant go back...

I hope there is an easy approach to handle my torture. I had a proxmox setup used till a week ago. My setup: I use GPU passthrough so that my AI guest VM can use gpu accelaration. Because of the settings required by pci passthrough vga output from host is disabled. I have 2 ethernet ports...

Not that it is very essential, but I want to ask others opinion. I have many VM that I have for different experimentations, some of them I keep running but I intereact with small subset at each point in time. With proxmox (some extension or completely separate tool) is it possible to linux vm...

thanks for reply I already have settings for grub GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on iommu=pt pcie_acs_override=downstream,multifunction nofb nomodeset video=vesafb:eek:ff video=efifb:eek:ff" I already have /etc/modprobe.d/vfio.conf options vfio-pci ids=10de:1b81,10de:10f0...

Hello I have been trying to set up passthrough to my Windows guest. I tried following different tutorials. Overcame several issues. I feel I am almost there. But also I feel almost like quitting. Installed latest driver on windows guest and it gives error 43 for the device. I am at a point...