[Solved] Ubuntu 12.04 WPA2 Detects Wireless Network But Fails to Connect to Router

What is the output of :

sudo lshw -C network; lsb_release -a; uname -a; sudo dmidecode -t 1

Thanks

Andrew,
Thanks very much. I hope the information below suffices.
Julianloui

|||||||- lshw output:
  *-network
       description: Wireless interface
       product: AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express)
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:0b:00.0
       logical name: wlan0
       version: 01
       serial: 00:1b:63:cc:7a:f1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=3.2.0-60-generic-pae firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
       resources: irq:16 memory:d7300000-d730ffff
  *-network
       description: Ethernet interface
       product: 88E8058 PCI-E Gigabit Ethernet Controller
       vendor: Marvell Technology Group Ltd.
       physical id: 0
       bus info: pci@0000:0c:00.0
       logical name: eth0
       version: 13
       serial: 00:1b:63:ab:46:08
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 firmware=N/A latency=0 link=no multicast=yes port=twisted pair
       resources: irq:45 memory:d7200000-d7203fff ioport:3000(size=256) memory:db600000-db61ffff

|||||||- lsb output
Distributor ID: Ubuntu
Description: Ubuntu 12.04.4 LTS
Release: 12.04
Codename: precise

|||||||- lsb error
No LSB modules are available.

|||||||- uname output
Linux mc 3.2.0-60-generic-pae #91-Ubuntu SMP Wed Feb 19 04:14:56 UTC 2014 i686 i686 i386 GNU/Linux

|||||||- dmidecode output
# dmidecode 2.11
SMBIOS 2.4 present.

Handle 0x0011, DMI type 1, 27 bytes
System Information
 Manufacturer: Apple Inc.
 Product Name: MacBookPro3,1
 Version: 1.0
 Serial Number: W872805AX91
 UUID: 9CFE245E-D0C8-BD45-A79F-54EA5FBD3D97
 Wake-up Type: Power Switch
 SKU Number: System SKU#
 Family: MacBook Pro

What device (router, AP) are you connecting to?

The AP I am trying to connect to is a Verizon FiOS wireless router made by Actiontek.

Julianloui

OK, there are a few reports of troubles with that router and Linux clients but nothing specific. To get a better look into this can you post what is being written to the file /var/log/syslog when you try to connect? The timestamp at the beginning of the lines may be helpful to find the related events.

[ SOLVED ]
Hi, Everyone,

I am happy to report that i can now connect to the Internet after deleting the following file. Luckily I spotted this solution tonight at www.ubuntuforums.org, to which I am very grateful.

/etc/udev/rules.d/70-persistent-net.rules

Julianloui

2014-05-17

This confirms that my problem has now been resolved as stated above in Post # 7.

Julianloui

Thanks Mark Rijckenberg, that solved my question.