Intel 8265NGW PCIe Error

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hi All,
We make a customized carrier board and use Intel 8265NGW as wifi module.
We find that sometimes the system has pcie errors. This pcie error rate is about 1/20.
We also test the jetson nano developer kit. This error is also happended.
But the error rate is lower than our carrier board. It is about 1/60.
How can I solve this problem? Any suggestions would be greatly appreciated.
kernel_log.txt (97.3 KB)

2

Please also share the error message. Thanks.

3

Hi,

Please share kernel logs which has these PCIe error and also “sudo lspci -vvv” output.

Thanks,
Manikanta

4

also, can you please give the output of “sudo lspci -vv”? If you see ASPM enabled for the link between root port and the WiFi device, please add “pcie_aspm=off” to the kernel command line and check.

5

Hi vidyas,
I attached the logs of kernel and lspci. I will try to set “pcie_aspm=off” and test again later.
lspci.txt (13.6 KB)
kernel.txt (79.7 KB)

6

Hi,

Receiver error most likely caused by L0s. You can disable aspm runtime with below command, give it a try.

echo “performance” > /sys/module/pcie_aspm/parameters/policy

Thanks,
Manikanta

7

Hi All,
I tested these two different solutions.
One is to add “pcie_aspm = off” to the kernel command line, and the other is “pcie_aspm.policy = performance”.
Both of them can solve this problem. Thanks for your help.
Also, are there any side effects of using these two solutions?

9

Hi,

There are no side effects, apart from increase in power consumption.

Thanks,
Manikanta