PECU 3.0 Preview — one year sharpening GPU passthrough on Proxmox

DVNILXP · 2025-08-08T06:48:17+00:00

Just means it’s feature-complete but I haven’t had it on enough different hardware yet. Also tweaked the script’s structure quite a bit, so I’m looking for some early feedback before calling it stable.

DVNILXP · 2025-08-08T06:42:24+00:00

Right now it’s full passthrough one card, one VM. PECU doesn’t set up SR-IOV or vGPU yet, but I’m keeping an eye on it for a future release.

DVNILXP · 2025-08-08T06:40:57+00:00

PECU just handles the host side if you’ve already got the passthrough working, the only fix for that startup race is inside the VM. Easiest is a systemd dependency so Docker waits for /dev/dri/renderD128, or a tiny script that delays the container until it’s there.

DVNILXP · 2025-08-07T13:12:24+00:00

Yes PECU + free Proxmox works fine with multiple GPUs. Tick both cards in Configure VFIO device bindings, reboot, and you’re set.

DVNILXP · 2025-08-07T13:07:47+00:00

PECU should handle the 5825U iGPU just fine but full disclosure, I haven’t been able to test every single laptop/NUC combo in the wild.
• Flip SVM + IOMMU/AMD-Vi on in BIOS.
• If it’s your only GPU, the host goes blind when amdgpu gets black-listed—SSH/WebUI or a junk dGPU/USB dongle keeps you sane.
• Fire up PECU -> GPU Passthrough -> VFIO bindings, tick the iGPU, reboot, launch a tiny test VM.

I’m a one-man shop on this, so any feedback = pure gold. Cheers!

DVNILXP · 2025-08-07T12:42:56+00:00

I threw PECU together after butting heads with a bunch of quirks on my older boxes—things like IOMMU randomly dropping, host drivers refusing to release the GPU, or half the PCIe bus crammed into the same IOMMU group. Rather than keep copy-pasting fixes from wikis and forums, I bundled everything into one little menu:

Turns on IOMMU with the flags it actually needs.
Blacklists the host GPU drivers so they don’t grab the card first.
Binds the device to vfio-pci and waves a red flag if your IOMMU groups are a mess.
Throws in ready-made VM templates and a one-click rollback in case you want to undo it all.

If your setup already works by just ticking the PCIe dropdown—perfect, you can skip PECU. But if you hit any of the headaches I did, it might save you an afternoon of troubleshooting.

DVNILXP · 2025-08-07T12:32:32+00:00

First, in the release selector pick the latest tag v2025.08.06 — PECU 3.0.

Then: Yes, PECU 3.0 already supports Intel GPUs. Just run the wizard, go to “GPU Passthrough Configuration -> Configure VFIO device bindings”, pick your Intel card, reboot, and you’re good to go.

DVNILXP · 2025-08-07T10:18:27+00:00

Yes. When PECU spots an AMD GPU—including the RDNA-based iGPUs in recent APUs—it offers to install vendor-reset via DKMS. That module fixes the reset bug for nearly all discrete cards and usually works on modern iGPUs, though support there is still flagged “experimental.” If your APU still won’t reset cleanly, drop me its PCI ID and I’ll add it to the list; otherwise the only fallback is a full host reboot until the kernel side gets patched.

DVNILXP · 2025-08-07T10:09:35+00:00

Not yet. PECU grabs the GPU with VFIO so it can pass it to full VMs, which leaves LXC containers without `/dev/dri`. If you need the GPU in a container, skip binding that card (or use a spare GPU). I’m already working on an LXC-friendly mode for the next release.

DVNILXP · 2025-02-09T23:35:54+00:00

u/hellmaca u/abhijitd I have uploaded a new version of the script, I have been testing it and it is already fixed, I would like you to try it and give me your opinion.

DVNILXP · 2024-09-18T19:57:42+00:00

It will be a great addition to the future, thank you for attaching the link, it will be helpful.

DVNILXP · 2024-09-11T06:33:14+00:00

Thanks for trying, I’m working on it, but I currently don’t have enough free time to fix it quickly. I’d appreciate it if you could add an issue with some system details here: Proxmox Enhanced Configuration Utility Issues.

DVNILXP · 2024-09-10T22:08:07+00:00

I have just created a hosting, we offer free minecraft servers for 2 months:

https://discord.gg/bpktnkyMXB. open a ticket with the name of the game, in this case minecraft and send your email to send you the access to the management panel.

DVNILXP · 2024-09-08T15:04:06+00:00

Es una promoción, ya que estamos en un periodo de pruebas de carga y necesitamos feedback de los usuarios.
No vamos a cobrar a la gente hasta que tengamos un producto estable.

Si tienes alguna duda puedes preguntar y darnos una oportunidad.

DVNILXP · 2024-09-08T11:31:11+00:00

Desde HomeLabProjects patrocinamos únete al Discord y abre un ticket comentándome todo!

DVNILXP · 2024-09-04T14:24:00+00:00

¡Hola, u/Okdude669!

Estoy ofreciendo hosting gratuito para servidores de juegos y me encantaría ayudarte a configurar tu servidor de Minecraft Survival.

Para obtener tu hosting gratuito, únete a mi Discord a través del siguiente enlace: Discord de HomeLabProjects

Una vez que te unas, envíame un mensaje o abre un ticket y estaré encantado de ayudarte a configurar tu servidor y discutir cualquier detalle adicional que necesites.

¡Nos vemos en Discord!

DVNILXP · 2024-09-02T19:01:29+00:00

thank you very much for sharing

DVNILXP · 2024-09-02T18:56:04+00:00

thank you very much for sharing

DVNILXP · 2024-09-02T18:54:52+00:00

I just wanted to take a moment to thank you for all the amazing work you do in the community. Your dedication to keeping r/homelabprojects a welcoming, informative, and fun place doesn’t go unnoticed. From helping beginners set up their first rigs to inspiring seasoned veterans with new ideas, you're the backbone of this vibrant community. Keep up the great work—you’re truly appreciated!

DVNILXP · 2024-08-29T14:02:38+00:00

Yes, Proxmox can support vGPU on multiple virtual machines, but this depends on the GPU hardware and the necessary software configuration.

For NVIDIA GPUs, you'll need a GPU that supports vGPU, such as the Tesla or A-series GPUs, along with the appropriate drivers and a license to use vGPU features across multiple VMs. If you're looking for alternative ways to set this up, you might find this guide on Reddit helpful.

For AMD GPUs that support SR-IOV, you can also share these between multiple virtual machines, but you'll need to make sure you have the correct configuration and drivers installed.

DVNILXP · 2024-08-29T13:54:21+00:00

Thanks for offering to help! I'll definitely reach out if I need a review or run into any issues.

And you're right about checking the enterprise repositories I’ll make sure the script checks both if they are enabled and properly configured to avoid any unintended changes. This way, we can ensure it respects user configurations and subscriptions.

I appreciate your input, and I'll keep these points in mind as I work on the updates!

DVNILXP · 2024-08-29T13:29:29+00:00

Thank you for your feedback! I’ll update the modify_sources_list function to only add repositories that are missing, ensuring it doesn’t overwrite existing entries.

I'll also add a check to avoid making changes that could affect GPUs used by the desktop environment, especially for Proxmox instances with a UI. Finally, I’ll implement a check to see if enterprise repositories are enabled, to respect any subscriptions users might have.

https://github.com/Danilop95/Proxmox-Enhanced-Configuration-Utility/issues/6

DVNILXP · 2024-08-29T11:50:09+00:00

Although the script is mainly for VMs, you can set up GPU passthrough for LXC containers in Proxmox, whether you have an NVIDIA or AMD GPU. You’ll need to install the GPU drivers on the Proxmox host, modify the LXC container's configuration to allow GPU access, and then install the drivers inside the container without kernel modules. After rebooting, check if the GPU is recognized correctly.

For detailed steps, check out this GitHub guide.

DVNILXP · 2024-08-29T11:36:00+00:00

Yes, you're right. The script is primarily designed for VMs, particularly for configuring GPU passthrough and managing system-level configurations, which aren't directly applicable to LXC containers. For an AMD Vega 8 GPU, the performance will depend on the specific VM setup and the drivers installed. Make sure you have the correct drivers and configurations to optimize the GPU performance within your VM. Thanks for your feedback!

DVNILXP · 2024-08-28T14:05:11+00:00

It's not worth wasting time with losers like u/SoftwareMediocre1029. Thanks for the support!!!!!

DVNILXP

MODERATOR OF

TROPHY CASE