My original problem is solved: it turns out that I just needed to install

NetworkManager-wifi

rpm (which adds WiFi plugin to network manager). Now I'm back in happy GUI world in which everything "just works". Like on Macintosh... only better ;-)

Valeri

PS beats me why I needed to install it separately though, i.e. why it wasn't installed with "development workstation" (plus bunch of extras) rpm set...

On Wed, November 25, 2015 1:44 pm, Valeri Galtsev wrote:

Dear Experts,

I would like to ask your advise on good reading about how to add WiFi

device, and how to control its settings on CentOS.

Sounds really dumb, but this is what I am NOT able to do on CentOS 7

what

I was able to do in the past, beginning somewhere since RedHat 5 or 6,

through Fedora and up to CentOS 6.

In brief: my card is Intel 6235; CentOS 7 (fully updatted), latest

kernel

(3.10.0-229.20.1), relevant Intel firmware version for my card is in

/lib/firmware (together with large bunch of other Intel WiFi firmware), relevant modules are loaded in kernel:

iwlwifi iwldvm mac80211 cfg80211

"/sbin/ifconfig -a" shows my device in the list renamed to wlp3s0

(according to PCI slot numbering I figure), dmesg shows device brought up

successfully detected and renamed as above. lspci shows device with its

correct full name (Network controller: Intel Corporation ... 6235"

Now comes the fun part (no, troublesome for me part). When I click on

the

NetworkManager Applet in right top corner, there are no WiFi devices. I

go

to Network Settings from there. My device is in the list under name "PCI

Unknown". I click on that, the device is described as "unmanaged", and there is no way to make changes to the contrary to other devices (correct

MAC address is displayed).

OK, I assume I just need to declare device as NM_CONTROLLED. There is no

relevant /etc/sysconfig/ifcfg-wlp3s0 - where I know I can declare that. I

use "nmtui" to add configuration, then add to ifcfg-wlp3s0

NM_CONTROLLED="yes"

line. Reboot. Still the same.

Just for comparison I booted Ubuntu 14.0.4 x86_64 live CD. Yes, it can

see

my wireless, and I can connect to WiFi networks. Kernel is just a notch

newer (3.13.0.24) which shouldn't matter according to Intel information which kernel versions this device is supported in. List of relevant kernel

modules loaded by ubuntu is exactly the same. I don't see anything weird

like the need to separately load firmware as kernel module (yes, indeed I'm going nuts, that would be "freebsd-ism" I guess).

I do not want to have Ubuntu (or Debian which likely will work out of

the

box too) on this laptop. So, apparently I need a pointer to good reading

on how do we do it on CentOS 7 "dirty way" - when "click here, choose in menu that" doesn't work.

Thanks a lot for your advises!

Valeri

++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++

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++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++