AER Corrected error received


New Member
Aug 29, 2022
I have a fresh Proxmox installation (8.0.3) on a Dell OptiPlex 3000 SFF. The bootloader is systemd-boot. Im on kernel PVE 6.2.16-6.
When the onboard Network interface is connected, I get the following post about once a second: "pcieport 000:00:1c.2: AER Corrected error received: 0000:02:00.0"
The PCIe IDs in question correspond to:
00:1c.2 PCI bridge: Intel Corporation Device 7aba (rev 11)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
The system seems to be running stable.

Does anyone have a suggestion how I could diagnose this?

So far, I have done the following:
I found this forum post. Its describes a similar error but on ubuntu and with a GPU. What I read out of it was that the post could be due to the Power management settings. I disabled all power management in BIOS (S1, S3, S4, S5)
Also, I made sure the BIOS is up-to-date.

I would very much appreciate any help.

Have a great week.
No, Sadly I never did. I ended up putting a Pci NIC in. and not using the onboard NIC. My porblem was gone then....
I am still looking for a solution. but no further yet.
AER is usually (exceptions prove the rule) one of two things:
1.) Poor PCIe signaling, due to damage, adapters and/or poor layout.
2.) Issues with power-management, that result in pseudo signaling issues. In other words: Power-Management related problems, that look like siganling issues, on the specific driver code-path, but indeed are based on logical problems in the power-management of a device, or the handling of the device by the driver.

Quick test to rule out power-management, is (for example) to boot with the kernel commandline parameter "pcie_aspm=off". If that helps, then you most likely do NOT have an actual issue with signal quality.
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