Proxmox 8.2 / Kernel 6.8 breaks iGPU passthrough for UHD630

[PigLover]

iGPU passthrough using PCIe passthrough for an Intel UHD 630 (i9-10900) works perfectly on Proxmox <= 8.0 and Kernel 6.5.x. But after upgrading to Proxmox 8.2 and kernel 6.8.x the whole system just hangs. Can't even get good logs to post.

Reverting to the kernel 6.5 boot environment stabilizes things and the passthrough works again.

Confirmed that it is the PCIe passthrough causing the problem by removing the PCIe device from the offending VM, rebooting the system into the kernel 6.8 boot enviornment. Everything is stable / normal. Shutting down the VM, adding the PCIe passthrough iGPU back, and then restarting the VM immdediatly causes the platform to hang.

Again - can't get logs because the passthrough blanks the console. And SSH sessions that were in place when it hangs just drop.

 

[Nuno]

I also have the same problem. Reverting to the kernel 6.5 boot was the solution.
Hope we could solve this to use the latest kernels.

 

[KrisFromFuture]

problem even exist in 6.8.8 kernel

Jun 22 11:37:51 proxmox kernel: vfio-pci 0000:02:00.0: timed out waiting for pending transaction; performing function level reset anyway
Jun 22 11:37:51 proxmox kernel: vfio-pci 0000:02:00.0: Unable to change power state from D0 to D3hot, device inaccessible

do ypu found any solution ?

 

[PigLover]

Yes (sorta). Pinned kernel 6.5.

More seriously - I get the impression that this will not be fixed in the 6.8+ kernel stream anytime soon. Something got badly broken and looking at other message streams/email lists it appears that this is going to take a while.

 

[KrisFromFuture]

Yes (sorta). Pinned kernel 6.5.

More seriously - I get the impression that this will not be fixed in the 6.8+ kernel stream anytime soon. Something got badly broken and looking at other message streams/email lists it appears that this is going to take a while.

agree
6.8.4.2 pinned and it looks stable with pci passthrough

 

[DerfM]

Found this problem today after finally doing the 8.2 upgrade. I've been passing my Intel iGPU to a VM by blacklisting the drivers on boot and then assigning it via devices. My VM would run fine for some time and then just puke. I booted up using the 6.5.13-5 Kernel and everything has been stable since.

 

[vincent2]

Same issue here, pinning the 6.5.13-5-pve kernel ( proxmox-boot-tool kernel pin 6.5.13-5-pve ) is indeed a (temporary) workaround for this issue.

 

[wheeliebinladin]

I have given up on IGPU passthrough on windows for the moment however i am going to try downloading one of the above mentioned kernels. For what it works the passthrough works fine for linux vms regardless of the kernal i upgrade to the latest this week and my debian12 passthrough is still fine. (i7 9700) UHD-630

 

[DerfM]

I have given up on IGPU passthrough on windows for the moment however i am going to try downloading one of the above mentioned kernels. For what it works the passthrough works fine for linux vms regardless of the kernal i upgrade to the latest this week and my debian12 passthrough is still fine. (i7 9700) UHD-630

6.5 should just be an option at boot. GIve it a try.

 

[wheeliebinladin]

~# dpkg --list|grep proxmox-kernel
ii proxmox-kernel-6.8 6.8.8-2 all Latest Proxmox Kernel Image
ii proxmox-kernel-6.8.4-2-pve-signed 6.8.4-2 amd64 Proxmox Kernel Image (signed)
ii proxmox-kernel-6.8.4-3-pve-signed 6.8.4-3 amd64 Proxmox Kernel Image (signed)
ii proxmox-kernel-6.8.8-2-pve-signed 6.8.8-2 amd64 Proxmox Kernel Image (signed)

All i have for now but im about to install the 6.5 and give it a whirl! will post results, what i can say is i can find nothing but post after post of problems regarding passthrough on 6.8. Glad i ran into the thread, it has inspired me to have another go at passing through the UHD 630 to windows.

 

[oussema]

can you please tell me how to correctly pin on kernel 6.5 , cuz am using no subsctiption , and by listing kernels i found only 6.8 kernel.
I am new to proxmox and thanks.
i tried to apt install it , and it says unable to locate package
and i am unable to found the required kernel here : https://mirror.cs.uchicago.edu/proxmox/dists/bullseye/pve-no-subscription/binary-amd64

 

[Azunai333]

and by listing kernels i found only 6.8 kernel.

To install an older 6.5 kernel use:
apt install proxmox-kernel-6.5

But remember that you won't get any updates for this kernel anymore!

 

[oussema]

To install an older 6.5 kernel use:
apt install proxmox-kernel-6.5

But remember that you won't get any updates for this kernel anymore!

i've tried this and it's unable to to locate as i've told u :

root@pve:~# apt install proxmox-kernel-6.5
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package proxmox-kernel-6.5
E: Couldn't find any package by glob 'proxmox-kernel-6.5'

 

[oussema]

Okay so, for people who had the same problem as me , just update the sources.list and add the needed package from here : https://pve.proxmox.com/wiki/Package_Repositories#sysadmin_no_subscription_repo in /etc/apt/sources.list
apt update
apt install proxmox-kernel-....
proxmox-boot-tool kernel pin proxmox-kernel-....
reboot now

 

[wheeliebinladin]

can you please tell me how to correctly pin on kernel 6.5 , cuz am using no subsctiption , and by listing kernels i found only 6.8 kernel.
I am new to proxmox and thanks.
i tried to apt install it , and it says unable to locate package
and i am unable to found the required kernel here : https://mirror.cs.uchicago.edu/proxmox/dists/bullseye/pve-no-subscription/binary-amd64

dpkg --list|grep proxmox-kernel - will show installed kernels

As i understand i installed one which is still supported...
apt install proxmox-kernel-6.5.13-5-pve-signed
apt install proxmox-headers-6.5.13-5-pve

And then to pin it
proxmox-boot-tool kernel pin 6.5.13-5-pve

Worth noting that at least in my case this solution/workaround did not work. I can passthough fine to a linux VM regardless of kernel but not windows. Also worth noting I am a proxmox newbie and very possibly missing something dumb/obvious.

EDIT: For some reason everything updated at a delay and it looks like you solved your issue

 

[KrisFromFuture]

Problem with passthrough pci NVME to Win11 VM still exist in 6.8.8.2 kernel

swtpm_setup: Not overwriting existing state file.
kvm: ../hw/pci/pci.c:1633: pci_irq_handler: Assertion `0 <= irq_num && irq_num < PCI_NUM_PINS' failed.
stopping swtpm instance (pid 4832) due to QEMU startup error
TASK ERROR: start failed: QEMU exited with code 1

pinned 6.8.4.2 kernel as a solution

 

[Christikfa]

Im currently on 6.8.8-4 and have been able to get the IGPU to show without a code 43 in device manager, i need to disable/enable the driver on each startup though. If its showing as enabled in device manager can i assume its been correctly passed through, are there any other checks that can be done to ensure its passed through correctly? Proxmox newbie BTW!

 

[iceman3k]

Does anyone have any updates? Would using the Ubuntu kernel sources fix iGPU passthrough? https://github.com/proxmox/pve-kernel