[Discuss] Ubuntu 16.04 Wifi Connection Disappeared

[Rahul Singh]

Hi Nancy

FWIW you can try "rfkill list" in the terminal. If it seems your wireless card is soft blocked, "rfkill unblock" (possibly followed by "sudo service network-manager restart") might help. 

https://linux.die.net/man/1/rfkill

On Tue, Jan 03, 2017 at 09:30:53PM -0500, Nancy Allison wrote:
> Tried it. Error message flashed : Disconnected -- you are now offline.
> 
> Clicked the windshield wiper triangle icon. Enable Networking is selected.
> There is no option to enable wifi.
> 
> On Tue, Jan 3, 2017 at 9:23 PM, Joel A Savage <jlsavage at gmail.com> wrote:
> 
> > Have you stumbled across this yet?  I guess this behavior is well known.
> > Try the nmtui command and variants see if that gets you any traction.
> >
> > https://www.reddit.com/r/LinuxActionShow/comments/4jqv67/ubuntu_1604_
> > networkmanager_fixed/
> >
> > On Jan 3, 2017 9:04 PM, "Nancy Allison" <nancythewriter7 at gmail.com> wrote:
> >
> >> I'm looking at this webpage, which looked promising. Why does it want me
> >> to
> >> download a driver?
> >>
> >> http://smallbusiness.chron.com/disable-wireless-toshiba-sate
> >> llite-52666.html
> >>
> >> The Fn-F8 key combo is not doing anything, unfortunately. Fn-F12 (which
> >> looks like an oldfashioned glass thermometer with the bulb on top) turns
> >> on
> >> and off the Bluetooth icon.
> >>
> >> Dang.
> >>
> >> I wonder if I will have to wait until the next BLU installfest to get it
> >> working. Computers are great when they work.
> >>
> >> What did I doooooo!
> >>
> >> On Tue, Jan 3, 2017 at 8:49 PM, Gregory Boyce <gboyce at badbelly.com>
> >> wrote:
> >>
> >> > A lot of laptops include a shut off for the wireless in the form of a
> >> > function key or a physical switch.  It may be worth checking for that.
> >> >
> >> > On Tue, Jan 3, 2017, 8:35 PM Nancy Allison <nancythewriter7 at gmail.com>
> >> > wrote:
> >> >
> >> >> Hi, everyone. Thank you for your great replies! I hope this additional
> >> >> detail is useful. (Yep, means problem not solved yet.)
> >> >>
> >> >> Greg:
> >> >>
> >> >> I followed your numbered steps, which were great, through #3. At #4, I
> >> see
> >> >> your screenshot. However, the list on the left contains only two items:
> >> >>
> >> >> Wired
> >> >> Network proxy
> >> >>
> >> >> Airplane Mode is off, but there is no Wireless item on the right, and
> >> no
> >> >> wireless networks are listed.
> >> >>
> >> >> Greg and Mike: I opened the terminal window and entered this command:
> >> >>
> >> >>     sudo service network-manager restart
> >> >>
> >> >> I put in my password.
> >> >>
> >> >> For a while, a handy Enable Wi-Fi option appeared in a menu at the top
> >> of
> >> >> the window. I clicked it! But still, it didn't discover my local wi-fi
> >> >> network, so I thought, "I'll reboot, and when it loads up, it will
> >> find my
> >> >> Wi-Fi network, and all will be well."
> >> >>
> >> >> Alas, it was not to be. Instead, the Enable Wi-Fi option disappeared
> >> once
> >> >> again from the list, and of course my local network was not listed
> >> among
> >> >> the wi-fi networks.
> >> >>
> >> >> So, I was back to square one.
> >> >>
> >> >> Mike, I have a Toshiba Satellite. After a little googling about
> >> >> identifying
> >> >> my wireless card, I ran lspci in the terminal window, and I'm seeing:
> >> >>
> >> >> network controller: Intel Corporation Wireless 3160 (rev cb)
> >> >> Ethernet controller: Realtek Semiconductor Co., Ltd.
> >> RTL8111/8168/8411PCI
> >> >> Express Gigabit Ethernet Controller (rev 0c)
> >> >>
> >> >> Is this the information you were looking for? Ubuntu 14.nn on this
> >> laptop
> >> >> linked successfully to the Internet for quite a while. But maybe Ubuntu
> >> >> 16.04 could have problems with the same networking card?
> >> >>
> >> >> As a last thought, I've rebooted numerous times, so even if I messed
> >> up my
> >> >> password a time or two, I don't think I could have messed it up every
> >> >> time.
> >> >>
> >> >> Thank you all so much. If there's more information that would help, ask
> >> >> away. If you can think of any next steps I should try, I'm all ears!
> >> >>
> >> >>
> >> >>
> >> >> On Tue, Jan 3, 2017 at 5:16 PM, Bill Ricker <bill.n1vux at gmail.com>
> >> wrote:
> >> >>
> >> >> > I have had problems with WIFI waking from SUSPEND with 16.04 with one
> >> >> > laptop.
> >> >> > (and with a prior version with another laptop! Both Lenovo T61's.)
> >> >> >
> >> >> > Don't know if that's your issue but mentioning it just in case.
> >> >> >  (And i may try the suggested sudo restart on that one, thanks )
> >> >> >
> >> >> >
> >> >> >
> >> >> > Bill Ricker
> >> >> > bill.n1vux at gmail.com
> >> >> > https://www.linkedin.com/in/n1vux
> >> >> >
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> >> >>
> >> >
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