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Realtek RTL8125 LAN Controller: Issues and Solutions

The Realtek RTL8125 LAN controller is a popular choice for many computers, but it has been reported to have issues with overheating and strange network errors. This issue has been specifically reported on Ubuntu 22.04, where the network adapter may randomly reset and cause a momentary disruption in network connectivity.

Cause of the Issue

The cause of this issue has been identified as flow control pause packets, which can be fixed with the latest firmware. It is important to note that this issue may not be limited to Ubuntu 22.04 and may occur on other operating systems as well.

Troubleshooting Steps

If you are experiencing this issue, the following troubleshooting steps can help resolve the problem:

Check that your wireless adapter is enabled and that Ubuntu recognizes it. If drivers are available for your wireless adapter, install them and check if they resolve the issue. Check your connection to the internet and try restarting your computer. If the above steps do not work, try running the Network Adapter Troubleshooter in Windows Settings. Download the Realtek LAN driver ver.10039_05252020 from the provided link and see if it resolves the issue. Try testing a different network in an air-conditioned room to see if the problem persists. Load BIOS default with only one RAM installed to the system and see if this resolves the issue. Check the full error in the event log, which is Event ID: 10400 NDIS Reset. This indicates that the network driver has detected that its hardware has stopped responding to commands. To fix this, try resetting the network adapter, resetting the Winsock, or reinstalling Ethernet drivers manually. Conclusion

In conclusion, the Realtek RTL8125 LAN controller can have issues with overheating and strange network errors, especially on Ubuntu 22.04. To fix this, it is important to first check that your wireless adapter is enabled and that Ubuntu recognizes it, and then try running the Network Adapter Troubleshooter. If the problem persists, try downloading the Realtek LAN driver ver.10039_05252020 and resetting the network adapter.

Citations:

https://help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide

https://www.reddit.com/r/gigabyte/comments/j0r0r1/x570_aorus_master_rev11_realtek_lan_problem/

https://community.intel.com/t5/Ethernet-Products/Ethernet-Controller-10G-X550T-not-working-on-Ubuntu-22-04/m-p/14306094

https://askubuntu.com/questions/1259947/cant-get-rtl8125b-working-on-20-04

https://www.dell.com/support/kbdoc/en-in/000131519/how-to-troubleshoot-network-issues-in-ubuntu-linux-on-your-dell-pc

https://ubuntu.com/server/docs/network-configuration

https://forum.asrock.com/forum_posts.asp?TID=14888&title=realtek-2-5gbe-rtl8125-ndis-reset-problem

https://www.systweak.com/blogs/fix-realtek-ethernet-drivers/

https://askubuntu.com/questions/1449167/ubuntu-22-04-network-connectivity-problems

https://www.cse.iitd.ac.in/~mittal/wifi.html

https://www.lifewire.com/fix-windows-10-network-drivers-4684431

https://www.youtube.com/watch?v=Bd-60iVnc-k

https://unix.stackexchange.com/questions/716782/weird-network-traffic-on-ubuntu-22-04

It is important to note that these troubleshooting steps are based on reports and experiences of some users and may not apply to every case. If the problem persists, it is always recommended to consult a professional or the manufacturer for further assistance.