6.12.5 2.5g-8125 Interface down, please check the cable

I tried again, and nothing changes. RTL8125 2.5GbE Controller could be seen in the System Devices in 6.12.5, but the interface is down. Another X540 controller works well.

Edited November 29, 2023 by zixuan

Please attach your diagnostics for bug reports.

Are you using the Realtek plugin ?

 

if so, is it up to date ?

if not, you should try it since the Realtek kernel drivers are hit and miss.

 

Install/update the plugin from 6.12.4 then update to 6.12.5. Note to wait for the system to tell you that you can reboot.

1 hour ago, ChatNoir said:

Please attach your diagnostics for bug reports.

Are you using the Realtek plugin ?

 

if so, is it up to date ?

if not, you should try it since the Realtek kernel drivers are hit and miss.

 

Install/update the plugin from 6.12.4 then update to 6.12.5. Note to wait for the system to tell you that you can reboot.

Thanks for advice. I just installed the latest Realtek plugin and then updated to 6.12.5 and the RTL-8125 works well now.

There may be an issue with the Realtek 2.5GbE in-tree driver, good that it looks like the plugin still works.

Changed Status to Solved

@zixuancan you please confirm if you are using a non stock MTU value? Looks like the kernel driver does not work only if your are using Jumbo Frames.