Passed-through GPU stuttering

leesteken said:
In priciple yes, but no guarantees that it actually can or will. Is the pcie_acs_override parameter actually in the output of cat /proc/cmdline?
Click to expand...
Looks like it's in there:
BOOT_IMAGE=/boot/vmlinuz-5.15.30-2-pve root=/dev/mapper/pve-root ro intel_iommu=on amd_iommu=on iommu=pt rd.driver.pre=vfio-pci video=efifb:off kvm.ignore_msrs=1 kvm.allow_unsafe_assigned_interrupts=1 pcie_acs_override=downstream,multifunction vfio-pci.ids=10de:1c82,10de:0fb9,10de:0fbc vfio-pci.disable_vga=1 video=simplefb:off nofb nomodeset quiet intel_iommu=on amd_iommu=on modprobe.blacklist=xhci_hcd modprobe.blacklist=nvidia-gpu modprobe.blacklist=nouveau modprobe.blacklist=nvidiafb pcie_acs_override=downstream,multifunction nofb nomodeset video=vesafb:off,efifb:off kvm.ignore_msrs=1 kvm.allow_unsafe_assigned_interrupts=1 vfio-pci.ids=10de:1c82,10de:0fb9,10de:0fbc vfio-pci.disable_vga=1 video=simplefb:off

I've been reading other threads that mention typos in the patch, so I'm currently trying to get my head around that.
https://forum.proxmox.com/threads/m...-missing-acs-capabilities-4-patch-file.41257/
 
i have the same issue, i noticed that when I move the mouse or use the keyboard, it's easy to reproduce.

audio/video become choppy ramdomly, it'll be back to normal in a few seconds, but the audio/video are out of sync (The videois behind the audio).
 
granzort said:
i have the same issue, i noticed that when I move the mouse or use the keyboard, it's easy to reproduce.

audio/video become choppy ramdomly, it'll be back to normal in a few seconds, but the audio/video are out of sync (The videois behind the audio).
Click to expand...
This might be different for your case, but in my situation it was down to my ZFS pool. I had slow spinning HDDs which induced the stuttering, making me believe it was due to the passthrough.
 
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