[SOLVED] Dell PowerEdge R630 reboots immediately on kernel 6.17.2-2-pve (PWR2262 / CPU0704 / UEFI0078)

[msp]

Hi,
I’m experiencing an issue booting the new Proxmox kernel 6.17.2-2-pve on a Dell PowerEdge R630.
The system boots perfectly with kernel 6.14.11-4-pve, but kernel 6.17 reboots instantly before reaching a shell.

This looks like a platform-specific regression affecting Dell 13G servers (R630/R730), so I’d like to provide details and check with the Proxmox kernel maintainers.

Hardware / Firmware
Server: Dell PowerEdge R630
CPUs: Intel(R) Xeon(R) CPU E5-2660 v3
BIOS: 2.19.0

Working Kernel, Boots normally, stable: Linux pve1 6.14.11-4-pve #1 SMP PREEMPT_DYNAMIC PMX 6.14.11-4
Failing Kernel, Reboots instantly before login: 6.17.2-2-pve
No logs are written because the system resets very early.

Dell Lifecycle Controller Logs when booting 6.17, the following appear:

• PWR2262: The Intel Management Engine has reported an internal system error. "The Intel Management Engine is unable to utilize the PECI over DMI facility."
• UEFI0078: One or more Machine Check errors occurred in the previous boot.
• CPU0704: CPU 1 machine check error detected.

These errors do not appear when booting 6.14.

Since the crash happens before userspace, I cannot collect logs from 6.17. The behavior strongly suggests a PECI / ME / VT-d interaction introduced in kernel 6.17.

Could a Proxmox kernel maintainer confirm whether kernel 6.17 has known boot issues on Dell 13G platforms?
Are there recommended kernel parameters?


Happy to run any tests or provide additional info.

Thanks!

 

[momus]

Hi, look for this: https://pve.proxmox.com/wiki/Roadmap#9.1-known-issues
and this: https://forum.proxmox.com/threads/o...est-no-subscription.173920/page-5#post-817147

in short: you must upgrade bios and/or change 2 settings in bios and everything will work without problems.

 

[jdancer]

Running latest kernel (6.17.2-2) without issues on 13G Dells. Also running fine on 12G, 11G, 10G Dells too.

These 13G Dells do have the latest firmware and BIOS. UEFI, Secure Boot, X2APIC, and IOAT DMA are enabled. I do NOT have SR-IOV enabled.

 

[msp]

Thank you very much for your replies. I can confirm that setting X2APIC, and IOAT DMA to enabled, solved the issue, now kernel 6.17.2-2 boots normally. I do NOT have Secure Boot enabled and SR-IOV is enabled.

 

[grand_goat_hat78]

I've put a write up together to help the next person

https://intheworldofmc.blogspot.com/2026/01/proxmox-installer-rebooting-at-waiting.html

 

[skybolt_1]

I've put a write up together to help the next person

https://intheworldofmc.blogspot.com/2026/01/proxmox-installer-rebooting-at-waiting.html

Thanks for this. I arrived at this thread through some searches related to iDRAC PWR2262 - "The Intel Management Engine is unable to utilize the PECI over DMI facility." errors appearing in IDRAC on a Dell T430. The system has been hard resetting with no kernel logging for a few months which I didn't catch until recently since it was happening in the middle of the night. I believe that this happened after I upgraded to the 7.x kernel but have no proof.

After reviewing the BIOS settings I discovered that I/OAT DMA Engine was disabled.

To avoid link rot of @grand_goat_hat78's article, the core steps are to enter your Dell's BIOS and set:

System BIOS → Processor Settings

X2APIC Mode → Enabled

System BIOS → Integrated Devices

SR-IOV Global Enable → Enabled

I/OAT DMA Engine → Enabled

Save changes, reboot, then retry the installer.

 

[mmurphy]

Thanks for this. I arrived at this thread through some searches related to iDRAC PWR2262 - "The Intel Management Engine is unable to utilize the PECI over DMI facility." errors appearing in IDRAC on a Dell T430. The system has been hard resetting with no kernel logging for a few months which I didn't catch until recently since it was happening in the middle of the night. I believe that this happened after I upgraded to the 7.x kernel but have no proof.

After reviewing the BIOS settings I discovered that I/OAT DMA Engine was disabled.

To avoid link rot of @grand_goat_hat78's article, the core steps are to enter your Dell's BIOS and set:

System BIOS → Processor Settings

X2APIC Mode → Enabled

System BIOS → Integrated Devices

SR-IOV Global Enable → Enabled

I/OAT DMA Engine → Enabled

Save changes, reboot, then retry the installer.

Thanks for this. It proved to be very helpful. I was working on installing a GPU in my server and sometimes when accessing the GPU from a VM the host would reboot. My BIOS settings matched what you have here except for the I/OAT DMA Engine (I had disabled) so I changed that and also decided to change the SystemProfile from PerfPerWattOptimizedOs to Performance since there were indications that going into the lower power states could be problematic as well. I would like to be able to turn that back on so the system can use less power when it's not busy, but I'm going to run with it as is for a while to see if the reboots go away. The system had been very stable prior to working with the GPU but I think the problems are an interaction of the GPU and the BIOS settings. Once again, thank you.

 

[skybolt_1]

@mmurphy Hopefully the resolution is as simple as this for you. For me, this did not fix the problem.

I'm now working down a list of potential hardware fixes, starting with moving from an Intel E5-2630L v4 to an E5-2630L v3. According to some Reddit thread pointed to a now-defunct Intel forum post, there are "known issues" with the v4 series that pertain to PCI passthrough. I have no idea how true it is, but for less than $10 on eBay I decided to try it. So far, I'm at 93 hours of runtime and counting... fingers crossed.