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This is a problem in Ubuntu 13.10 and it's a problem with the WiFi. Ubuntu will never connect to the network. All of my other devices work fine.

The computer detects the network and pops up the WiFi password dialog. I enter the correct password, click OK and it tries to connect for a few seconds and then asks for the password again. I am using my laptop Inspiron N4010 wireless adapter which was working fine under windows and Ubuntu 13.04.

I searched Google for a few hours and didn't find any working answer, maybe someone here could help?

I had no problem connecting to wireless networks before this even in Ubuntu 13.10. This problem just occurs when I try to connect to a special router: D-Link DSL-2730U!

There is another problem in networking of my laptop with Ubuntu 13.10 which is explained HERE. May be these two problems originating from a single source?

If I set the connection IPv4 address manually, the wireless connection is established, but I have no Internet access. Even I have no access to the router gateway (ping replies Destination Host Unreachable).

Before setting IPv4 address manually in my connection (Automatic (DHCP)), sudo tail -f /var/log/syslog displays:

Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224824] cfg80211: World regulatory domain updated:
Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224830] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224834] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224836] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224839] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224842] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:10:24 me-Inspiron-N4010 kernel: [51426.224844] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:10:26 me-Inspiron-N4010 avahi-daemon[1040]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 10 14:10:26 me-Inspiron-N4010 avahi-daemon[1040]: New relevant interface eth1.IPv6 for mDNS.
Apr 10 14:10:26 me-Inspiron-N4010 avahi-daemon[1040]: Registering new address record for fe80::72f1:a1ff:fe4f:8427 on eth1.*.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) starting connection 'md2014'
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) scheduled...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) started...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) scheduled...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) complete.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) starting...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1/wireless): access point 'md2014' has security, but secrets are required.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: config -> need-auth (reason 'none') [50 60 0]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) complete.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) scheduled...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) started...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) scheduled...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) complete.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) starting...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1/wireless): connection 'md2014' has security, and secrets exist.  No new secrets needed.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Config: added 'ssid' value 'md2014'
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Config: added 'scan_ssid' value '1'
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Config: added 'psk' value '<omitted>'
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) complete.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Config: set interface ap_scan to 1
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): supplicant interface state: disconnected -> scanning
Apr 10 14:14:04 me-Inspiron-N4010 wpa_supplicant[1307]: eth1: Trying to associate with c0:a8:d8:8b:84:a3 (SSID='md2014' freq=2437 MHz)
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): supplicant interface state: scanning -> associating
Apr 10 14:14:04 me-Inspiron-N4010 wpa_supplicant[1307]: eth1: Associated with c0:a8:d8:8b:84:a3
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): supplicant interface state: associating -> 4-way handshake
Apr 10 14:14:04 me-Inspiron-N4010 wpa_supplicant[1307]: eth1: WPA: Key negotiation completed with c0:a8:d8:8b:84:a3 [PTK=CCMP GTK=CCMP]
Apr 10 14:14:04 me-Inspiron-N4010 wpa_supplicant[1307]: eth1: CTRL-EVENT-CONNECTED - Connection to c0:a8:d8:8b:84:a3 completed (reauth) [id=0 id_str=]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): supplicant interface state: 4-way handshake -> completed
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1/wireless) Stage 2 of 5 (Device Configure) successful.  Connected to wireless network 'md2014'.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) scheduled.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) started...
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: config -> ip-config (reason 'none') [50 70 0]
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Beginning DHCPv4 transaction (timeout in 45 seconds)
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> dhclient started with pid 12539
Apr 10 14:14:04 me-Inspiron-N4010 avahi-daemon[1040]: Withdrawing address record for fe80::72f1:a1ff:fe4f:8427 on eth1.
Apr 10 14:14:04 me-Inspiron-N4010 avahi-daemon[1040]: Leaving mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 10 14:14:04 me-Inspiron-N4010 avahi-daemon[1040]: Interface eth1.IPv6 no longer relevant for mDNS.
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) complete.
Apr 10 14:14:04 me-Inspiron-N4010 dhclient: Internet Systems Consortium DHCP Client 4.2.4
Apr 10 14:14:04 me-Inspiron-N4010 dhclient: Copyright 2004-2012 Internet Systems Consortium.
Apr 10 14:14:04 me-Inspiron-N4010 dhclient: All rights reserved.
Apr 10 14:14:04 me-Inspiron-N4010 dhclient: For info, please visit https://www.isc.org/software/dhcp/
Apr 10 14:14:04 me-Inspiron-N4010 dhclient: 
Apr 10 14:14:04 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): DHCPv4 state changed nbi -> preinit
Apr 10 14:14:05 me-Inspiron-N4010 dhclient: Listening on LPF/eth1/10:a1:d1:8f:44:33
Apr 10 14:14:05 me-Inspiron-N4010 dhclient: Sending on   LPF/eth1/10:a1:d1:8f:44:33
Apr 10 14:14:05 me-Inspiron-N4010 dhclient: Sending on   Socket/fallback
Apr 10 14:14:05 me-Inspiron-N4010 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 3 (xid=0x5a9f1c79)
Apr 10 14:14:06 me-Inspiron-N4010 avahi-daemon[1040]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 10 14:14:06 me-Inspiron-N4010 avahi-daemon[1040]: New relevant interface eth1.IPv6 for mDNS.
Apr 10 14:14:06 me-Inspiron-N4010 avahi-daemon[1040]: Registering new address record for fe80::72f1:a1ff:fe4f:8427 on eth1.*.
Apr 10 14:14:07 me-Inspiron-N4010 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4 (xid=0x5a9f1c79)
Apr 10 14:14:11 me-Inspiron-N4010 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 10 (xid=0x5a9f1c79)
Apr 10 14:14:21 me-Inspiron-N4010 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 11 (xid=0x5a9f1c79)
Apr 10 14:14:32 me-Inspiron-N4010 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 16 (xid=0x5a9f1c79)
Apr 10 14:14:48 me-Inspiron-N4010 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 17 (xid=0x5a9f1c79)
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <warn> (eth1): DHCPv4 request timed out.
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): canceled DHCP transaction, DHCP client pid 12539
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 4 of 5 (IPv4 Configure Timeout) started...
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <warn> Activation (eth1) failed for connection 'md2014'
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> Activation (eth1) Stage 4 of 5 (IPv4 Configure Timeout) complete.
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): device state change: failed -> disconnected (reason 'none') [120 30 0]
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): deactivating device (reason 'none') [0]
Apr 10 14:14:50 me-Inspiron-N4010 avahi-daemon[1040]: Withdrawing address record for fe80::72f1:a1ff:fe4f:8427 on eth1.
Apr 10 14:14:50 me-Inspiron-N4010 avahi-daemon[1040]: Leaving mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 10 14:14:50 me-Inspiron-N4010 avahi-daemon[1040]: Interface eth1.IPv6 no longer relevant for mDNS.
Apr 10 14:14:50 me-Inspiron-N4010 wpa_supplicant[1307]: eth1: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=0
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.104006] cfg80211: Calling CRDA to update world regulatory domain
Apr 10 14:14:50 me-Inspiron-N4010 NetworkManager[1166]: <info> (eth1): supplicant interface state: completed -> disconnected
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111229] cfg80211: World regulatory domain updated:
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111239] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111246] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111253] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111258] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111264] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:14:50 me-Inspiron-N4010 kernel: [51692.111270] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 10 14:14:52 me-Inspiron-N4010 avahi-daemon[1040]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 10 14:14:52 me-Inspiron-N4010 avahi-daemon[1040]: New relevant interface eth1.IPv6 for mDNS.
Apr 10 14:14:52 me-Inspiron-N4010 avahi-daemon[1040]: Registering new address record for fe80::72f1:a1ff:fe4f:8427 on eth1.*.

After setting IPv4 address manually in my connection, sudo tail -f /var/log/syslog displays:

Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229651] cfg80211: World regulatory domain updated:
Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229659] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229665] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229669] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229674] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229678] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 15 15:09:02 me-Inspiron-N4010 kernel: [16423.229682] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Apr 15 15:09:03 me-Inspiron-N4010 avahi-daemon[1093]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 15 15:09:03 me-Inspiron-N4010 avahi-daemon[1093]: New relevant interface eth1.IPv6 for mDNS.
Apr 15 15:09:03 me-Inspiron-N4010 avahi-daemon[1093]: Registering new address record for fe80::72f1:a1ff:fe4f:8427 on eth1.*.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) starting connection 'md2014'
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) scheduled...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) started...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) scheduled...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) complete.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) starting...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1/wireless): access point 'md2014' has security, but secrets are required.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: config -> need-auth (reason 'none') [50 60 0]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) complete.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) scheduled...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) started...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) scheduled...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) complete.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) starting...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1/wireless): connection 'md2014' has security, and secrets exist.  No new secrets needed.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Config: added 'ssid' value 'md2014'
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Config: added 'scan_ssid' value '1'
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Config: added 'psk' value '<omitted>'
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) complete.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Config: set interface ap_scan to 1
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): supplicant interface state: disconnected -> scanning
Apr 15 15:09:11 me-Inspiron-N4010 wpa_supplicant[8119]: eth1: Trying to associate with c0:a8:d8:8b:84:a3 (SSID='md2014' freq=2412 MHz)
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): supplicant interface state: scanning -> associating
Apr 15 15:09:11 me-Inspiron-N4010 wpa_supplicant[8119]: eth1: Associated with c0:a8:d8:8b:84:a3
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): supplicant interface state: associating -> 4-way handshake
Apr 15 15:09:11 me-Inspiron-N4010 wpa_supplicant[8119]: eth1: WPA: Key negotiation completed with c0:a8:d8:8b:84:a3 [PTK=CCMP GTK=CCMP]
Apr 15 15:09:11 me-Inspiron-N4010 wpa_supplicant[8119]: eth1: CTRL-EVENT-CONNECTED - Connection to c0:a8:d8:8b:84:a3 completed (reauth) [id=0 id_str=]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): supplicant interface state: 4-way handshake -> completed
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1/wireless) Stage 2 of 5 (Device Configure) successful.  Connected to wireless network 'md2014'.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) scheduled.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) started...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: config -> ip-config (reason 'none') [50 70 0]
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Beginning IP6 addrconf.
Apr 15 15:09:11 me-Inspiron-N4010 avahi-daemon[1093]: Withdrawing address record for fe80::72f1:a1ff:fe4f:8427 on eth1.
Apr 15 15:09:11 me-Inspiron-N4010 avahi-daemon[1093]: Leaving mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 15 15:09:11 me-Inspiron-N4010 avahi-daemon[1093]: Interface eth1.IPv6 no longer relevant for mDNS.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) complete.
Apr 15 15:09:11 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 5 of 5 (IPv4 Commit) started...
Apr 15 15:09:11 me-Inspiron-N4010 avahi-daemon[1093]: Joining mDNS multicast group on interface eth1.IPv4 with address 192.168.100.101.
Apr 15 15:09:11 me-Inspiron-N4010 avahi-daemon[1093]: New relevant interface eth1.IPv4 for mDNS.
Apr 15 15:09:11 me-Inspiron-N4010 avahi-daemon[1093]: Registering new address record for 192.168.100.101 on eth1.IPv4.
Apr 15 15:09:12 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Apr 15 15:09:12 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) Stage 5 of 5 (IPv4 Commit) complete.
Apr 15 15:09:12 me-Inspiron-N4010 NetworkManager[8109]: <info> (eth1): device state change: secondaries -> activated (reason 'none') [90 100 0]
Apr 15 15:09:12 me-Inspiron-N4010 NetworkManager[8109]: <info> Writing DNS information to /sbin/resolvconf
Apr 15 15:09:12 me-Inspiron-N4010 dnsmasq[8123]: setting upstream servers from DBus
Apr 15 15:09:12 me-Inspiron-N4010 dnsmasq[8123]: using nameserver 192.168.100.1#53
Apr 15 15:09:12 me-Inspiron-N4010 dnsmasq[8123]: using nameserver 192.168.100.1#53
Apr 15 15:09:12 me-Inspiron-N4010 NetworkManager[8109]: <info> Activation (eth1) successful, device activated.
Apr 15 15:09:12 me-Inspiron-N4010 dbus[988]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Apr 15 15:09:12 me-Inspiron-N4010 dbus[988]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Apr 15 15:09:13 me-Inspiron-N4010 avahi-daemon[1093]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::72f1:a1ff:fe4f:8427.
Apr 15 15:09:13 me-Inspiron-N4010 avahi-daemon[1093]: New relevant interface eth1.IPv6 for mDNS.
Apr 15 15:09:13 me-Inspiron-N4010 avahi-daemon[1093]: Registering new address record for fe80::72f1:a1ff:fe4f:8427 on eth1.*.
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Not sure how you are setting the IP manually, it looks like it's still trying DHCP. –  Nattgew Apr 11 at 16:00
    
@Nattgew Sorry, I amended syslog content. –  PHP Learner Apr 15 at 10:51
    
There is same problem in 14.04!!! –  PHP Learner May 10 at 11:32

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