[SOLVED] Wireless cannot be enabled with network manager

alexmj · 2012-01-25 19:28:09

I successfully managed wireless network connection on my thinkpad by manual method (iwconfig+dhcpcd) and connected to internet effectively.
But when I switched to the automatic management - NetworkManager + network-manager-applet, only wired connection is working.Pressing the manage wireless key (fn9) on my laptop didnot link up wlan0 and the tray icon of network shows the "wireless is disabled" message always.

The dmesg result after pressing Fn9 is as below,

[17838.210267] iwlwifi 0000:08:00.0: L1 Enabled; Disabling L0S
[17838.275786] ADDRCONF(NETDEV_UP): wlan0: link is not ready

Useful infos

$ lspci | grep -i net
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
08:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000

$iwconfig
lo no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off

eth0 no wireless extensions.

Last edited by alexmj (2012-02-01 12:37:08)

JuseBox · 2012-01-25 19:38:56

This same issue existed for me I was unable to find a solution. What I did find (before going back to manual) that wpa_supplicant was having issues with network manager. Might want to look into that.

Also, its not only archlinux, the latest ubuntu 12.04 beta has this issue with network manager. but manually connecting even on ubuntu works fine.

Last edited by JuseBox (2012-01-25 19:40:04)

alexmj · 2012-01-26 03:50:10

I didnot install the wpa_supplicant and the wireless management worked fine without it by manual method.
So i think there is no dispute between wpa_supplicant and network manager,as it is not present in my system.

JuseBox · 2012-01-26 14:21:42

alexmj wrote:

I didnot install the wpa_supplicant and the wireless management worked fine without it by manual method.
So i think there is no dispute between wpa_supplicant and network manager,as it is not present in my system.

Unless network manager is dependent of it. Since of course anything with higher then easy security the program will need to have wpa_supplicant installed. Even if you don't need it, might be worth it to try and see if it solves it.

alexmj · 2012-01-26 16:01:47

Sorry,I thought that wpa_supplicant is not installed on my system and when i tried to install it,pacman says it is already installed.But I cant remember that i did the installation manually.So i tried to uninstall wpa_supplicant but failed to do so since pacman shows network manager requires wpa_supplicant.
Anyway the network manager still resist wireless connection.May be as you said wpa_supplicant has some issues with network manager.Since I am in a hurry to get wireless connection,I chose the wicd and wicd-gtk.Now wireless can be easily managed.But I am eager to find a solution for network manager issue.

rabbit827 · 2012-01-30 22:48:43

I had this problem for 6 months now and I went with wicd as well. But today I just found that blacklisting acer_wmi module fixes the problem.

Add this line

blacklist acer_wmi

to your /etc/modprobe.d/modprobe.conf file and reboot your computer.

Check these links for info on the bug :
http://us.generation-nt.com/answer/patc … 93971.html
http://www.fuduntu.org/forum/viewtopic. … &view=next

Last edited by rabbit827 (2012-01-31 19:28:10)

alexmj · 2012-01-31 18:01:32

Well done rabbit827!
acer_wmi was the problem.After blacklisting it wireless works fine with network manager.
Thanks for the post.

Last edited by alexmj (2012-01-31 18:03:18)

rabbit827 · 2012-01-31 19:29:02

Awesome! You can mark this thread solved I guess.

alexmj wrote:

Well done rabbit827!
acer_wmi was the problem.After blacklisting it wireless works fine with network manager.
Thanks for the post.

nimmo · 2012-02-13 21:37:56

Wow, I have been having this problem since I got my Lenovo Edge E520 back in September/October and had just switched to using wicd, but this works quite nicely... now I just need to decide whether to stick with wicd, or switch back to networkmanager again.

Either way, a huge thanks for solving his one!

Arch Linux

#1 2012-01-25 19:28:09

[SOLVED] Wireless cannot be enabled with network manager

#2 2012-01-25 19:38:56

Re: [SOLVED] Wireless cannot be enabled with network manager

#3 2012-01-26 03:50:10

Re: [SOLVED] Wireless cannot be enabled with network manager

#4 2012-01-26 14:21:42

Re: [SOLVED] Wireless cannot be enabled with network manager

#5 2012-01-26 16:01:47

Re: [SOLVED] Wireless cannot be enabled with network manager

#6 2012-01-30 22:48:43

Re: [SOLVED] Wireless cannot be enabled with network manager

#7 2012-01-31 18:01:32

Re: [SOLVED] Wireless cannot be enabled with network manager

#8 2012-01-31 19:29:02

Re: [SOLVED] Wireless cannot be enabled with network manager

#9 2012-02-13 21:37:56

Re: [SOLVED] Wireless cannot be enabled with network manager

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