LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices


Reply
  Search this Thread
Old 02-13-2019, 08:54 AM   #1
taylorkh
Senior Member
 
Registered: Jul 2006
Location: North Carolina
Distribution: CentOS 6, CentOS 7 (with Mate), Ubuntu 16.04 Mate
Posts: 1,871

Rep: Reputation: 146Reputation: 146
Why is WiFi enabled on a machine with no radio?


I am working my way through the various nmcli commands to try and get a handle on them. The machine in question is a Dell Precision workstation with NO radio nor WiFi connectivity. I found this curious
Code:
ken@taylor21:~$ nmcli radio
WIFI-HW  WIFI     WWAN-HW  WWAN    
enabled  enabled  enabled  enabled
I would also be interested to know what the WIFI-HW and WWAN-HW are. I can turn WIFI and WWAN on and of but not the two -HW entities. I did some searching and did not find an answer. I did find a question which speculated that -HW referred to hardware. If this is so... how could non-existant hardware be enabled???

TIA,

Ken
 
Old 02-13-2019, 03:16 PM   #2
jefro
Moderator
 
Registered: Mar 2008
Posts: 18,951

Rep: Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860
nmcli con show

nmcli dev status

nmcli dev wifi list

This might help us on this. I get the feeling that your results are just some oddity rather than actual results but we will see.
 
Old 02-13-2019, 03:40 PM   #3
ondoho
LQ Addict
 
Registered: Dec 2013
Posts: 11,499
Blog Entries: 8

Rep: Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016Reputation: 3016
Quote:
Originally Posted by taylorkh View Post
Code:
ken@taylor21:~$ nmcli radio
WIFI-HW  WIFI     WWAN-HW  WWAN    
enabled  enabled  enabled  enabled
I would also be interested to know what the WIFI-HW and WWAN-HW are. I can turn WIFI and WWAN on and of but not the two -HW entities.
my guess:
this output is very similar to 'rfkill list' output; apparently there's soft and hard switches for each radio device.
And I think that WWAN is the same as mobile broadband. could be wrong though.
 
Old 02-13-2019, 05:59 PM   #4
taylorkh
Senior Member
 
Registered: Jul 2006
Location: North Carolina
Distribution: CentOS 6, CentOS 7 (with Mate), Ubuntu 16.04 Mate
Posts: 1,871

Original Poster
Rep: Reputation: 146Reputation: 146
Thanks jefro,

As requested
Code:
[ken@taylor20 Desktop]$ nmcli con show
NAME                            UUID                                  TYPE      
enp0s31f6                       2adeb10a-865f-4e88-ae75-e29bb950303a  ethernet  
se-au-01.protonvpn.com.udp1194  0a1a6b43-1e1c-47f6-8e02-b7ebecee6f24  vpn       
se-fr-01.protonvpn.com.udp1194  ce7eb7d7-f0ec-4303-a77f-efd5fdb4d578  vpn       
se-hk-01.protonvpn.com.udp1194  3d580471-0ae9-43bb-bf0a-7ffa7172ff59  vpn       
se-jp-01.protonvpn.com.udp1194  cd369b22-8466-4772-979a-911a8a27b942  vpn       

[ken@taylor20 Desktop]$ nmcli dev status
DEVICE     TYPE      STATE      CONNECTION 
enp0s31f6  ethernet  connected  enp0s31f6  
vmnet1     ethernet  unmanaged  --         
vmnet8     ethernet  unmanaged  --         
lo         loopback  unmanaged  --         

[ken@taylor20 Desktop]$ nmcli dev wifi list

[ken@taylor20 Desktop]$ nmcli radio
WIFI-HW  WIFI     WWAN-HW  WWAN    
enabled  enabled  enabled  enabled
The above was on my physical workstation. Just for the heck of it I ran the commands on a CentOS 7.6 VM in VMWare player on the workstation
Code:
[ken@vmProton75 Desktop]$ nmcli con show
NAME   UUID                                  TYPE      DEVICE 
ens32  4858e3a0-6f4a-42a2-a3e2-d94578d513bc  ethernet  ens32  

[ken@vmProton75 Desktop]$ nmcli dev status
DEVICE  TYPE      STATE      CONNECTION 
ens32   ethernet  connected  ens32      
lo      loopback  unmanaged  --         

[ken@vmProton75 Desktop]$ nmcli dev wifi list

[ken@vmProton75 Desktop]$ nmcli radio
WIFI-HW  WIFI     WWAN-HW  WWAN    

Thanks ondoho,

WWAN is described as mobile broadband in the man page. NOTHING I have found tells me what the -HW variations are.

Ken
enabled  enabled  enabled  enabled
 
Old 02-13-2019, 09:18 PM   #5
jefro
Moderator
 
Registered: Mar 2008
Posts: 18,951

Rep: Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860
Indeed WWAN is wireless wide area network.

HW I have to assume is Hardware.

This wrong reporting has been submitted as a bug to RH. Not sure if they ever fixed it or discovered why.

My feeling is that the wan driver or chipset has some oddity.
 
Old 02-14-2019, 07:08 AM   #6
taylorkh
Senior Member
 
Registered: Jul 2006
Location: North Carolina
Distribution: CentOS 6, CentOS 7 (with Mate), Ubuntu 16.04 Mate
Posts: 1,871

Original Poster
Rep: Reputation: 146Reputation: 146
Thanks again jefro,

It certainly is an oddity. The same thing occurs on Ubuntu and Mint virtual machines on my workstation with no radio. It is not a show stopper by any means.

Ken

p.s. As you are a moderator, let me ask... Should I mark this thread as "solved"? It is not really solved but neither is it worth further effort. Please advise.
 
Old 02-14-2019, 03:39 PM   #7
jefro
Moderator
 
Registered: Mar 2008
Posts: 18,951

Rep: Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860Reputation: 2860
You have to make that choice. If you want more opinions, you can maybe leave it as it is. Hopefully someday someone will remember this and make a new comment.

Your other commands in network manager command line interface will provide you with clues to how to manage networks.

On your issues you have to understand that there is a lot going on. It may seem simple to blame nmcli but in reality it is really the billions of chipsets out there and folks to either get inside information to make a driver or have to wing it and make a driver. The driver and chipset both in my wild guess are at the core of this more than the manager is. (wild guess still)
 
Old 02-14-2019, 06:24 PM   #8
taylorkh
Senior Member
 
Registered: Jul 2006
Location: North Carolina
Distribution: CentOS 6, CentOS 7 (with Mate), Ubuntu 16.04 Mate
Posts: 1,871

Original Poster
Rep: Reputation: 146Reputation: 146
I have attempted in the past to "close" threads with solved but if the question is interesting folks still want to put their 2 cents in Which is OK.

As to hardware and drivers etc. Things really have gotten a lot better. I submitted a bug against Red Hat 8 (pre RHEL/Fedora) about my US Robotics external modem. Anaconda detected it during the OS install but it was not there after the first boot. I do not think that bug was ever addressed. 10 years ago CentOS 6 Anaconda would not detect the NIC in my Dell Studio XPS 8000 desktop. It would not install networking programs. However, if I put in a $5 generic Ethernet card from my junk box it was recognized and when I did the first boot I had TWO NICs! I pulled the temporary card and ran the same installation for 7 years.

Other than a couple of video cards which went off support by CentOS during that time I have really had pretty good luck as far as hardware goes.

I am making good progress on getting a handle on nmcli so I will just ignore things which I KNOW are not there. There are enough thing which ARE there for me to deal with

Ken
 
  


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
LXer: Court Says WiFi Isn't Radio Because It's Not Audio; Therefore WiFi Sniffing Can Be Wiretapping LXer Syndicated Linux News 0 09-10-2013 05:42 PM
Linux Podcast, LQ Radio, LQ Radio Jukebox forthcoming boomster LQ Suggestions & Feedback 10 09-19-2010 06:10 PM
What is 'FM digital radio, not DAB' and radio card setup? lugoteehalt Linux - Hardware 3 08-22-2008 09:36 AM
LXer: Bah humbug commercial radio, hurrah for Internet radio LXer Syndicated Linux News 0 05-02-2006 10:03 PM
X-Net Radio! Internet Radio with an attitude! xnetradio General 1 01-11-2004 11:01 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 06:19 AM.

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