Wired Connection not working. Wireless ok !

[lbonivento]

Hi,

First of all, thanks to everyone who is helping people on this forum.

I install Kubuntu 14.04 64bit on my new laptop (Dell Precision M3800) a few days ago. All seems to work very well but I get stuck on a network connection problem.

The wireless is ok ! But impossible to connect with my ethernet wired connection. I'm looking for solutions since 3 days on google and differents forums, but impossible to find a solution that work for me

If someone could help me to solve this, it will be very very very nice .

Here are some informations about my network setup :

ifconfig -a :

eth0 Link encap:Ethernet HWaddr 9c:eb:e8:14:47:22 inet6 addr: fe80::9eeb:e8ff:fe14:4722/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:2505 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:515481 (515.4 KB)


lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:11711 errors:0 dropped:0 overruns:0 frame:0
TX packets:11711 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1069512 (1.0 MB) TX bytes:1069512 (1.0 MB)


wlan0 Link encap:Ethernet HWaddr e8:2a:ea:3a:6a:6f
inet addr:192.168.0.17 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::ea2a:eaff:fe3a:6a6f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:58029 errors:0 dropped:0 overruns:0 frame:0
TX packets:60078 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:30844060 (30.8 MB) TX bytes:28850513 (28.8 MB)

nm-tool :

NetworkManager Tool

State: connected (global)


- Device: eth0 [argos-lan] ----------------------------------------------------
Type: Wired
Driver: smsc75xx
State: connecting (getting IP configuration)
Default: no
HW Address: 9C:EB:E8:14:47:22

Capabilities:
Carrier Detect: yes
Speed: 1000 Mb/s

Wired Properties
Carrier: on


- Device: wlan0 [UPC0041188] --------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: connected
Default: yes
HW Address: E8:2A:EA:3A:6A:6F


Capabilities:
Speed: 39 Mb/s


Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes


Wireless Access Points (* = current AP)
cni-36501: Infra, 00:24:C8:5D:FE:E0, Freq 2427 MHz, Rate 54 Mb/s, Strength 35 WPA WPA2
*UPC0041188: Infra, FC:94:E3:12:2C:92, Freq 2412 MHz, Rate 54 Mb/s, Strength 54 WPA WPA2
vmt-85173: Infra, A4:52:6F:7E:CD:A1, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA WPA2
UPC1384147: Infra, 8C:04:FF:7A:B5:BD, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA WPA2
christinelorene: Infra, E0:91:F5:60:86:28, Freq 2437 MHz, Rate 54 Mb/s, Strength 30 WPA WPA2
UPC0045418: Infra, FC:94:E3:32:A82, Freq 2462 MHz, Rate 54 Mb/s, Strength 27 WPA WPA2


IPv4 Settings:
Address: 192.168.0.17
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.1


DNS: 62.2.24.162
DNS: 62.2.17.61
DNS: 62.2.24.158
DNS: 62.2.17.60

/etc/network/interfaces file content:

# interfaces(5) file used by ifup(8) and ifdown(8)auto lo
iface lo inet loopback


# The primary network interface - use DHCP to find our address
auto eth0
iface eth0 inet dhcp

lshw -C network :

*-network description: Wireless interface
product: Wireless 7260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlan0
version: 6b
serial: e8:2a:ea:3a:6a:6f
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-27-generic firmware=22.1.7.0 ip=192.168.0.17 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:51 memory:f7900000-f7901fff
*-network
description: Ethernet interface
physical id: 2
logical name: eth0
serial: 9c:eb:e8:14:47:22
size: 1Gbit/s
capacity: 1Gbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=smsc75xx driverversion=22-Aug-2005 duplex=full firmware=smsc75xx USB 2.0 Gigabit Ethern link=yes multicast=yes port=MII speed=1Gbit/s

grep -i networkmanager /var/log/syslog when trying to connect wired connection:

Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) starting connection 'argos-lan'
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled...
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) started...
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) scheduled...
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) complete.
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) starting...
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> (eth0): device state change: prepare -> config (reason 'none') [40 50 0]
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) successful.
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled.
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) complete.
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) started...
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> (eth0): device state change: config -> ip-config (reason 'none') [50 70 0]
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> dhclient started with pid 5606
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Beginning IP6 addrconf.
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) complete.
Jun 2 19:02:29 KED-M3800-LBO NetworkManager[860]: <info> (eth0): DHCPv4 state changed nbi -> preinit
Jun 2 19:02:49 KED-M3800-LBO NetworkManager[860]: <info> (eth0): IP6 addrconf timed out or failed.
Jun 2 19:02:49 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jun 2 19:02:49 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Jun 2 19:02:49 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jun 2 19:03:14 KED-M3800-LBO NetworkManager[860]: <warn> (eth0): DHCPv4 request timed out.
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> (eth0): canceled DHCP transaction, DHCP client pid 5606
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 4 of 5 (IPv4 Configure Timeout) started...
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> (eth0): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <warn> Activation (eth0) failed for connection 'argos-lan'
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> Activation (eth0) Stage 4 of 5 (IPv4 Configure Timeout) complete.
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> (eth0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jun 2 19:03:15 KED-M3800-LBO NetworkManager[860]: <info> (eth0): deactivating device (reason 'none') [0]

Thanks a lot for your help !

Best regards
Ludovic

[Rog132]

What if ?

What will happen if you let the NetworkManager to handle the interfaces /1/ ?

At here /etc/network/interfaces:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

and the /etc/NetworkManager/NetworkManager.conf has (managed=true) :

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true

The network manager widget for the wired connection:



At here, if the connection is down (and NetworkManager widget is not showing the wired connection) the reset can be done with the command:

sudo service network-manager restart

This brings the wired connection to the widget.


Links

1. https://wiki.debian.org/NetworkManager

[lbonivento]

So, I reset my routeur and all my connections.

I also try to install Wicd client instead of Network-Manager.

Now my wired connection is connecting but I've another problem. I cannot access some websites (for example : www.infomaniak.com 'Oops! Google Chrome could not connect to www.infomaniak.com'), and connection is very very slow with others websites

With wireless always ok ! no problems.

What is the problem I really starting to despair ...

[oshunluvr]

It would be important to note that you're using a USB dongle ethernet adapter. I would suspect that it's a driver issue. Dell uses Ubuntu for it's laptops, they might have a driver update or Ubuntu download for you.

[lbonivento]

It would be important to note that you're using a USB dongle ethernet adapter. I would suspect that it's a driver issue. Dell uses Ubuntu for it's laptops, they might have a driver update or Ubuntu download for you.

Hi oshunluvr,

I've tried to find a specific linux driver on dell website, but nothing found for this smsc lan7500 usb to ethernet adapter. They provide only drivers for Windows. Then I search on google and found this website and driver :

http://www.microchip.com/SWLibraryWe...-LAN7500-LINUX

But I don't know if it is the right one, and how to install it.

Actually I've driver : smsc75xx 3-2:1.0 eth0: link up, 1000Mbps, full-duplex, lpa 0xCDE1

[lbonivento]

Just to send a feedback : Dell USB dongle ethernet adapter is the problem ! I bought another one (Hama USB ethernet adapter) and now all is working well !