View Full Version : [ubuntu] Wireless Authentication Problem

October 9th, 2012, 07:48 AM
Hi all. I recently installed Ubuntu (12) onto my Compaq 610 laptop (about 3 weeks ago), I installed it as a dual boot with Vista.

Up until now, everything has been perfect. On installation Ubuntu picked up my wireless router and on putting my pass-code in, authorized with no problem.

Yesterday, we had some power outages in the area, so I switched off the laptop and router for the day. But when I re-booted last night, Ubuntu picked up the wireless network, but kept asking for the pass-code over and over again without connecting.

When I re-boot into windows, there's no problem, I connect with no issues so I can't see it being the router or wireless. It must be a software issue.

I did a forum search and followed the advice where I could, the steps I followed...

1) Disable wireless and re-enable: had no effect.
2) Disable wireless, re-boot then enable: had no effect
3) run "sudo restart network-manager": no effect

So anything I could try?

October 9th, 2012, 07:58 AM
if it is a dial on demand connection created by you from the network manager, you can try to create a new connection giving your credentials.

October 9th, 2012, 08:30 AM
Makes no difference, it stills asks for authentication, over and over again without connecting. A 2nd screen also pops up asking me to enter the pass code again.

October 9th, 2012, 12:22 PM
Hi ,

try to put your password manually in network-manager

run in terminal

gksudo nm-connection-editorGoto "wireless" section > click on your connection > click edit.

First make sure that "available to all users" and "connect automatically" are marked up , then you can go to "wireless security" and set your password manually.

Close and reboot.


October 9th, 2012, 02:13 PM
Same problem, looks like someone borked a driver that was pushed out recently. If you have a USB Wireless stick or can move it to a hardwire port, now would be a good time to bust it out, otherwise wait until it gets fixed or try and reset it yourself.

October 9th, 2012, 02:50 PM
@nikTH: Thanks for the advice, but no difference at all. ubuntu still insists on asking for authentication but never connects. I did notice that two separate screens ask, the first is a gnome3 type screen, the 2nd is a unity type screen. I did remove UNTIY when I first installed Ubuntu and was able to connect no problem, so I don't thank that's the problem.

@moowcow: unfortunately the wireless isn't usb so i guess I'll have to wait.

Am going to try re-install ubuntu and see what happens.

October 14th, 2012, 07:54 AM
Since creating this thread a few days ago, I've re-installed Ubuntu twice now, googled for similar problems (which there seems to be many) and tried the suggestions made by various websites.

Still nothing. Pretty frustrating since I had it running perfectly at one stage! I really want to use Ubuntu and recommend it to family and friends, not too mention run it on my office laptops, but this lack of help and assistance is a definite killer, I have no option BUT to stick to windows! My experience with Ubuntu is definitely souring.

I would love to help solve this problem, but being a complete beginner to Ubuntu makes it difficult to even know where to start!

Where would one report this issue, is there a central database? Is there any way I could get hold of a developer, even if it is to just confirm an error on my side?

October 14th, 2012, 02:15 PM
If it is a driver issue it is likely to be specific to a particular driver / chipset, so we will need to know exactly what wireless hardware you have - you can get the info by running these commands in a terminal and posting back the results:

lspci -vnn | grep -e '\[0200\]' -e '\[0280\]'

lshw -C network

Also would be good to see what drivers are getting loaded:


April 22nd, 2013, 10:06 AM
I just now installed ubuntu and have the same problem, I keep getting these authentification messages for wifi connection passwords (though I am actually connected therough a wired connection). I printed the above codes and here are the results:
02:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6205 [8086:0082] (rev 34)
0a:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5761 Gigabit Ethernet PCIe [14e4:1681] (rev 10)

2) *-network
description: Wireless interface
product: Centrino Advanced-N 6205
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 34
serial: 8c:70:5a:6a:a5:d0
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.5.0-17-generic firmware= latency=0 multicast=yes wireless=IEEE 802.11abgn
resources: irq:43 memory:e3c00000-e3c01fff
description: Ethernet interface
product: NetXtreme BCM5761 Gigabit Ethernet PCIe
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:0a:00.0
logical name: eth0
version: 10
serial: d0:67:e5:4a:51:88
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.123 duplex=full firmware=5761-v3.78 ip= latency=0 multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:45 memory:e2010000-e201ffff memory:e2000000-e200ffff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
elad@elad-Latitude-E5420:~$ lsmod
Module Size Used by
bnep 17707 2
rfcomm 37276 12
uvcvideo 71277 0
snd_hda_codec_hdmi 31423 1
snd_hda_codec_idt 59761 1
videobuf2_core 32070 1 uvcvideo
videodev 95841 2 uvcvideo,videobuf2_core
videobuf2_vmalloc 12756 1 uvcvideo
videobuf2_memops 13184 1 videobuf2_vmalloc
joydev 17161 0
snd_hda_intel 32515 3
snd_hda_codec 111547 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
arc4 12473 2
iwlwifi 348544 0
snd_hwdep 13272 1 snd_hda_codec
snd_pcm 80163 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
mac80211 461161 1 iwlwifi
snd_seq_midi 13132 0
coretemp 13168 0
snd_rawmidi 25382 1 snd_seq_midi
snd_seq_midi_event 14475 1 snd_seq_midi
kvm_intel 126745 0
snd_seq 51255 2 snd_seq_midi,snd_seq_midi_event
btusb 17950 0
snd_timer 24411 2 snd_pcm,snd_seq
kvm 357806 1 kvm_intel
i915 457161 3
bluetooth 183228 22 bnep,rfcomm,btusb
cfg80211 175375 2 iwlwifi,mac80211
snd_seq_device 14137 3 snd_seq_midi,snd_rawmidi,snd_seq
dell_wmi 12601 0
sparse_keymap 13658 1 dell_wmi
drm_kms_helper 45271 1 i915
wmi 18590 1 dell_wmi
aesni_intel 17938 0
dell_laptop 17161 0
drm 230463 4 i915,drm_kms_helper
cryptd 15614 1 aesni_intel
aes_i586 16956 1 aesni_intel
snd 61991 16 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel ,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_s eq,snd_timer,snd_seq_device
mei 35796 0
i2c_algo_bit 13197 1 i915
psmouse 84843 0
soundcore 14599 1 snd
snd_page_alloc 14036 2 snd_hda_intel,snd_pcm
serio_raw 13031 0
dcdbas 14054 1 dell_laptop
video 18847 1 i915
ppdev 12817 0
lpc_ich 16925 0
microcode 18209 0
mac_hid 13037 0
parport_pc 31968 0
lp 13299 0
parport 40753 3 ppdev,parport_pc,lp
hid_generic 12445 0
hid_a4tech 12590 0
usbhid 41702 0
hid 82142 3 hid_generic,hid_a4tech,usbhid
firewire_ohci 35521 0
tg3 130448 0
firewire_core 57492 1 firewire_ohci
crc_itu_t 12627 1 firewire_core
sdhci_pci 18155 0
sdhci 27830 1 sdhci_pci

Its all chinese to me - hope it can help in solving the issue.

Feathers McGraw
April 22nd, 2013, 02:49 PM
Any chance your router updated its firmware after you reset it? Might be worth booting into Vista and having a look in the router admin page (e.g. type or something similar in your browser's address bar) to see if you could revert to the older version, if that is what has happened.

Might be easier than trying to find a compatible driver on the Ubuntu end.

Also, I had a similar problem with my laptop continually asking for a wifi password recently when I was trying to connect to a different router (a "MiFi") when my home router was down. The most frustrating thing about it was that I realised the problem was compatibility between the MiFi and the wireless driver on the laptop...but I had no internet connection to download and enable the proprietary driver with :mad:.


April 22nd, 2013, 03:01 PM
elad21: sometimes the Intel wifi devices don't play nice with wireless-n mode - try opening a terminal and doing

sudo modprobe -r iwlwifi

sudo modprobe -v iwlwifi 11n_disable=1

If that stops the authentication requests then you can make it persistent (i.e. disable 11n every time the module loads) by doing

echo "options iwlwifi 11n_disable=1" | sudo tee -a /etc/modprobe.d/iwlwifi.conf

eigersa: your hardware may be different - if you are still having issues then please post the same info as elad21 and we can help you troubleshoot