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#1 2021-03-10 20:56:51

r0cz
Member
From: Aalborg, Denmark
Registered: 2013-04-11
Posts: 4
Website

Ethernet device exists but can't set UP on ASUS ROG STRIX B550-F

Hi,

Got new motherboard and CPU. Currently booted and everything seems fine except ethernet (I use USB tethering from my phone to post this).
The device shows up, but nothing happens when I try to set it UP:

$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether f0:2f:74:1c:5b:07 brd ff:ff:ff:ff:ff:ff
$ ip link set enp6s0 up
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether f0:2f:74:1c:5b:07 brd ff:ff:ff:ff:ff:ff

It correctly (?) uses kernel module 'igc':

$ lspci -k
...
06:00.0 Ethernet controller: Intel Corporation Ethernet Controller I225-V (rev 02)
	Subsystem: ASUSTeK Computer Inc. Device 87d2
	Kernel driver in use: igc
	Kernel modules: igc
...

Normally I use systemd-networkd, but it seems to be stuck on "configuring", and indicates that it never got further than setting the device UP:

$ networkctl 
IDX LINK       TYPE     OPERATIONAL SETUP      
  1 lo         loopback carrier     unmanaged  
  2 enp6s0     ether    no-carrier  configuring

2 links listed.
$ networkctl status enp6s0 
● 2: enp6s0                                                                
                     Link File: /usr/lib/systemd/network/99-default.link   
                  Network File: /etc/systemd/network/10-wired.network      
                          Type: ether                                      
                         State: no-carrier (configuring)
                          Path: pci-0000:06:00.0                           
                        Driver: igc                                        
                        Vendor: Intel Corporation                          
                         Model: Ethernet Controller I225-V                 
                    HW Address: f0:2f:74:1c:5b:07 (ASUSTek COMPUTER INC.)  
                           MTU: 1500 (min: 68, max: 9216)                  
                         QDisc: mq                                         
  IPv6 Address Generation Mode: eui64                                      
          Queue Length (Tx/Rx): 4/4                                        
              Auto negotiation: yes                                        
                         Speed: n/a                                        
                          Port: tp                                         
                           DNS: 1.1.1.1                                    
                                8.8.8.8                                    
                                1.0.0.1                                    
                                8.8.4.4                                    
             DHCP6 Client DUID: DUID-EN/Vendor:0000ab11f79e5fbab9b9e4520000

Mar 10 22:22:22 n0va systemd-networkd[353]: enp6s0: Link UP

Not sure what to do from here. Is the device simply not supported by the module yet?
Any help is greatly appreciated.

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#2 2021-03-10 21:11:54

loqs
Member
Registered: 2014-03-06
Posts: 15,130

Re: Ethernet device exists but can't set UP on ASUS ROG STRIX B550-F

2: enp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000

The device is up,  as shown by the UP in <>,  however NO-CARRIER is also listed.  I would suggest checking the cable connection.

Last edited by loqs (2021-03-10 21:12:09)

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