The Ethernet port is stuck at 100Mbps.
The Ethernet port is stuck at 100Mbps.
Hi, I see you're dealing with a puzzling issue. You have a 1GB plan and your router claims to support 1GB speeds, but your PC only reaches up to 100Mbps. You've checked the router settings and even adjusted it in Linux, but nothing changes. On your Windows machine, the same problem occurs—setting to 1GB defaults back to 100Mbps. It seems the issue isn't with your OS or router configuration, but possibly with how your PC interprets or applies the speed settings. You mentioned your motherboard supports 1GB, and your laptop works fine with the same cable, which suggests the hardware side is okay. You're also considering resetting BIOS settings, but that didn't help. It might be worth testing with a different cable or checking if there are any driver issues, or even trying a different network adapter.
Here are some alternative phrasings:
- Could this guide assist you?
- Check these resources for more info.
- See if the following links provide help:
- [Ethernet speed issues with Gigabit connection](https://askubuntu.com/questions/1398448/...untu-20-04)
- [Launchpad bug report](https://bugs.launchpad.net/ubuntu/+sourc...ug/1930754)