LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian
User Name
Password
Debian This forum is for the discussion of Debian Linux.

Notices


Reply
  Search this Thread
Old 08-19-2017, 08:56 AM   #1
kel_en
Member
 
Registered: Jun 2005
Distribution: Debian
Posts: 98

Rep: Reputation: 15
Debian 9 doesn't see wifi networks


Upgraded Lenovo T420 laptops from Debian 8.8 to 9.1. Managed wireless connection works perfectly. It is configured with fixed IP and WEP security. There are 3 available wifi networks but the system doesn't see them after the upgrade. I have a mobile Verizon hotspot which I would like to use away from my home network. I can use my Nexus 7 but there are times I'd like to have a lapatop. Any suggestions?
 
Old 08-19-2017, 09:54 AM   #2
jim_p
Member
 
Registered: Aug 2009
Distribution: Debian testing
Posts: 557

Rep: Reputation: 127Reputation: 127
What is your wifi card?
 
Old 08-19-2017, 10:31 AM   #3
kel_en
Member
 
Registered: Jun 2005
Distribution: Debian
Posts: 98

Original Poster
Rep: Reputation: 15
Intel N 6205. I installed the requested firmware iwlwifi-something at the time of upgrade. Thanks for the reply.
 
Old 08-19-2017, 12:00 PM   #4
dejank
Member
 
Registered: May 2016
Location: Belgrade, Serbia
Distribution: Debian
Posts: 229

Rep: Reputation: Disabled
Perhaps it is network manager problem. What do you get from this:

Code:
iwlist wlan0 scan
Replace wlan0 with your wireless interface name, if it is different.
 
Old 08-19-2017, 12:28 PM   #5
kel_en
Member
 
Registered: Jun 2005
Distribution: Debian
Posts: 98

Original Poster
Rep: Reputation: 15
I get 4 cells. The first cell is my managed network connection. The second cell is the wifi channel from my router. The other cells are from neighbors. I can post the complete output if I can figure out how to upload the file. Thanks.
 
Old 08-19-2017, 12:34 PM   #6
dejank
Member
 
Registered: May 2016
Location: Belgrade, Serbia
Distribution: Debian
Posts: 229

Rep: Reputation: Disabled
So, important part is that network manager does not see those right?
 
Old 08-19-2017, 12:48 PM   #7
kel_en
Member
 
Registered: Jun 2005
Distribution: Debian
Posts: 98

Original Poster
Rep: Reputation: 15
Yes, the network manager does not see any of these, assuming it is the network manager that I am invoking when I click on the wireless icon and then try to select a network.
 
Old 08-19-2017, 01:07 PM   #8
dejank
Member
 
Registered: May 2016
Location: Belgrade, Serbia
Distribution: Debian
Posts: 229

Rep: Reputation: Disabled
It is, if you have default install, like Gnome, or KDE. Ok, now, you have 2 options. One is to learn how to configure network from command line, using tools like ip, iw, wpa_supplicant and/or ifconfig, iwlist, iwconfig. Other option is to install wicd, disable/remove network-manager and enable wicd. In most cases, wicd is better tool to manage wireless connections than network manager is. Also, bug rep that network manager, if you can.
 
Old 08-19-2017, 01:27 PM   #9
kel_en
Member
 
Registered: Jun 2005
Distribution: Debian
Posts: 98

Original Poster
Rep: Reputation: 15
Thank you. I will look into wicd. For years I have managed my networks via the command line. It is only the last week that I have the need to connect to a wireless hot spot with a laptop. Not sure if it was possible with Debian 8.X because I never invoked the network manager until this week, a month after upgrading to 9.1. Again, thanks.
 
Old 08-19-2017, 01:35 PM   #10
dejank
Member
 
Registered: May 2016
Location: Belgrade, Serbia
Distribution: Debian
Posts: 229

Rep: Reputation: Disabled
Pleasure, have fun
 
Old 08-19-2017, 06:10 PM   #11
kel_en
Member
 
Registered: Jun 2005
Distribution: Debian
Posts: 98

Original Poster
Rep: Reputation: 15
Solved by disabling NetworkManager and installing wicd.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Debian Networking Doesn't Work with Home Wifi 52358 Linux - Networking 4 03-13-2017 08:11 AM
Debian doesn't find wifi/eth drivers but Ubuntu 11.04/10 does? Jivan Naveen Linux - Newbie 6 01-19-2012 01:21 PM
[SOLVED] Cannot see wifi networks nine9nine Linux - Newbie 8 02-10-2011 04:05 PM
TL-WN821N Wifi usb doesn't work correctly on Debian Testing. Mortuus Linux - Hardware 0 08-14-2010 04:39 PM
[SOLVED] wifi doesn't work with debian on laptop mrj Debian 13 08-05-2009 11:19 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian

All times are GMT -5. The time now is 03:46 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration