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waldauf

Member

Registered: 2012-07-15

Posts: 133

Ethernet interface - struggling connection

Hello,

I'm not sure if there is some relation with this issue, but now I noticed new strange behaving of my ethernet network interface.

Some facts:
1. I'm trying to connect in company where is used MSCHAPv2.

2. Before cca. 1 months (day D) it works without any problem. I didn't do any changes in my NetworkManager configuration.

3. After day D I have problem with obtaining IPv4 address when I use NetworkManger. I have had to switch from NetworkManager to netctl (with MSCHAPv2 configuration) which worked some time.

4. Today morning I was connected but in one time I lost my connection and from this time I'm not able to optain IPv4. Control LEDs are blinking just till I boot into system. During boot Arch are switched off and I'm not able to force them to light on again. I tried to switch interface UP/DOWN, doesn't help. I tried to disable NetworkManager - didn't help. Every time LEDs switched off during boot. I disabled IPv6, tried to switch from DHCPCD to Dhclient and back. Nothing. I used NetworkManager or netctl - nothing. In fact I'm confused what to do next.

Can I ask you for some tips/advice what check or do now? 

My WH info:
* lswh

sudo lshw -c network -sanitize
  *-network                 
       description: Wireless interface
       product: Wireless 8265 / 8275
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 78
       serial: [REMOVED]
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.18.6-arch1-1-ARCH firmware=36.e91976c0.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:140 memory:f4200000-f4201fff
  *-network DISABLED
       description: Ethernet interface
       product: Ethernet Connection (5) I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 31
       serial: [REMOVED]
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.1-3 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:139 memory:f4300000-f431ffff
  *-network
       description: Ethernet interface
       physical id: 3
       logical name: wwp0s20f0u1u1i2
       serial: [REMOVED]
       capabilities: ethernet physical
       configuration: broadcast=yes driver=huawei_cdc_ncm driverversion=22-Aug-2005 firmware=Huawei CDC NCM device ip=[REMOVED] link=yes multicast=yes

* dmesg

dmesg|  grep enp0s31f6
[  140.650548] e1000e 0000:00:1f.6 enp0s31f6: renamed from eth0
[  166.739531] e1000e: enp0s31f6 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
[  166.739534] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
[  284.924146] e1000e: enp0s31f6 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
[  284.924151] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
[  513.606256] e1000e: enp0s31f6 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
[  513.606265] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
[  533.336354] e1000e: enp0s31f6 NIC Link is Down
[  538.798513] e1000e: enp0s31f6 NIC Link is Down

Now I'm leaving to home so I can continue tomorrow.

Last edited by waldauf (2018-09-12 07:48:45)

waldauf

Member

Registered: 2012-07-15

Posts: 133

Re: Ethernet interface - struggling connection

I have not discovered anything new why I have problem with obtaining IP. But i found quick win which is wpa_supplicant usage. It works me without problem.