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  1. K

    Kernel 5.15.64 breaks my VMs

    Hi, I just confirmed the work-around I hypothesized in my post: addint the blacklist configuration, together with the vfio options and the kernel parameters to not log on boot allows me to use 5.15.64. I suspect that the AMD driver has a bug in its "release GPU" code that was introduced some...
  2. K

    Kernel 5.15.64 breaks my VMs

    Hello all, I updated from 5.15.53-1-pve to 5.15.64-1-pve and my VMs have stopped working. When starting they UI simply prints an error that "Error: unable to read tail (got 0 bytes)". In /var/log/daemon.log I see: Nov 14 21:30:25 pve pve-guests[7004]: start VM 101...
  3. K

    vfio_bar_restore: reset recovery - restoring BARs

    Sure: root@pve:~# for d in /sys/kernel/iommu_groups/*/devices/*; do n=${d#*/iommu_groups/*}; n=${n%%/*}; printf 'IOMMU group %s ' "$n"; lspci -nns "${d##*/}"; done IOMMU group 0 00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge [1022:1482]...
  4. K

    Opt-in Linux Kernel 5.15 for Proxmox VE 7.x available

    Thank you! I followed your instructions about unblacklisting the amdgpu module and removing all the kernel parameters and it works just fine! I see the following in the kernel log when I start the VMs: Jul 10 23:08:34 pve kernel: Linux version 5.15.39-1-pve (build@proxmox) (gcc (Debian...
  5. K

    Opt-in Linux Kernel 5.15 for Proxmox VE 7.x available

    Hi all, I just located this thread after upgrading and running into GPU passthrough issues. My host is a 5950X with two GPUs: a 6700XT and a 6800. These are both passed through to VMs and I've been happily running with 5.13 kernel for a while, but after receiving 5.15 one of the two stopped...
  6. K

    vfio_bar_restore: reset recovery - restoring BARs

    After exhausting all options I looked at different 6000 series cards and ended up replacing the Aorus 6700 XT: there is simply something worng with that particular card. I am now using: MSI Radeon RX 6700 XT Mech 2X 12GB Asrock Radeon RX 6800 Challenger Pro 16GB Both of them work without...
  7. K

    vfio_bar_restore: reset recovery - restoring BARs

    Also note that if I suspend/resume the host, the issue is resolved and I can then successfully restart the VM and use the 6700XT in the VM. Here is the command I use: #!/bin/bash N=4 echo "1" | tee -a /sys/bus/pci/devices/0000\:0b\:00.0/remove echo "1" | tee -a...
  8. K

    vfio_bar_restore: reset recovery - restoring BARs

    I should note that: The 6700XT is passed through with the ROM hostpci0: 0000:0b:00,pcie=1,x-vga=1,romfile=Gigabyte.RX6700XT.12288.210318.rom If I try the same with the RX550 (which uses the vendor-reset) everything works
  9. K

    vfio_bar_restore: reset recovery - restoring BARs

    Hello everyone, I am trying to pass through a 6700XT properly. Currently I am stuck in the following state: Proxmox boots and I can start a VM using the GPU I can use the GPU in the VM quite stable (run BasemarkGPU, Unigine Heaven, Steam games) After shutting down the VM I can no longer...
  10. K

    Why do bind mounts prevent snapshots?

    Hello, I'm new to proxmox. Today I tried to take my first snapshot of an unprivileged container. Instead I found the button disabled and the message "The current guest configuration does not support taking new snapshots". After reading up in these forums, I saw references to this storage...

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