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- From: Ionuț Bulai <address@concealed>
- To: address@concealed
- Subject: [[cat-users]] Unable to connect to eduroam wired
- Date: Sun, 5 Oct 2025 16:40:08 +0300
I did everything as in the tutorial but I still have trouble connecting to wired on archlinux.
As you can see the connection is unavailable:
[isaac@dog ~]$ nmcli device
DEVICE TYPE STATE CONNECTION
lo loopback connected (externally) lo
wlan0 wifi disconnected --
p2p-dev-wlan0 wifi-p2p disconnected --
enp4s0 ethernet unavailable --
also, the link is not detected, even though the ethernet cable is working and it was tested:
[isaac@dog ~]$ sudo ethtool enp4s0
Settings for enp4s0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: Unknown!
Duplex: Unknown! (255)
Auto-negotiation: on
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no
I tried everything, and i mean everything to connect but it just doesn't work and now i have 3 eduroam wired connections that do not work:

Can you please, please, give me a troubleshoot or tips to get the wired connection to work please?
[isaac@dog ~]$ nmcli device
DEVICE TYPE STATE CONNECTION
lo loopback connected (externally) lo
wlan0 wifi disconnected --
p2p-dev-wlan0 wifi-p2p disconnected --
enp4s0 ethernet unavailable --
also, the link is not detected, even though the ethernet cable is working and it was tested:
[isaac@dog ~]$ sudo ethtool enp4s0
Settings for enp4s0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: Unknown!
Duplex: Unknown! (255)
Auto-negotiation: on
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no
I tried everything, and i mean everything to connect but it just doesn't work and now i have 3 eduroam wired connections that do not work:

Can you please, please, give me a troubleshoot or tips to get the wired connection to work please?
- [[cat-users]] Unable to connect to eduroam wired, Ionuț Bulai, 10/05/2025
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