I accidently deleted wpa_supplicant package and now I cant connect to the internet, not through wifi and not through LAN cable. What can I do? Thanks
anybody? please– user627272Dec 5, 2016 at 21:06
I recently found myself in the same situation. The answer is actually out there, but it's spread all over the internet
I had to do multiple different google searches( with multiple different keywords ) and go through dozens of different questions, on different forums, on the SAME TOPIC.
Finally, i was able to solve the problem, but had to go through a frustating process, this is very difficult for Linux Newbies, who like to play around with little or no knowledge( like me )
This was posted about a month ago and you probably solved it by now,
I'm gonna answer this anyways, It'll atleast make it easier for people who faces this very problem in the future:)
STEP 1 : getting acces to internet via ethernet cable
open your terminal and run this command
to find out the name of your ethernet device. the output will look something like this...
wlp2s0f0 IEEE 802.11 ESSID:"LYF" Mode:Managed Frequency:2.437 GHz Access Point: DC:E8:38:61:A4:50 Bit Rate=65 Mb/s Tx-Power=20 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=70/70 Signal level=-37 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:36 Invalid misc:76 Missed beacon:0 enp4s0 no wireless extensions. lo no wireless extensions.
in older versions of ubuntu, the wifi device will usually be named
wlan0 and the eternet ( LAN cable ) will probably be named as
eth0 ( or something like that )
but now, in 16.04 ( my ubuntu version ) the names are device specific. in my case they're
enp4s0 for wifi and eternet decices, respectively.
run this command to get your eternet device up and running...
sudo dhclient enp4s0 up
you can check by running
if it didn't work then your'll get a resolution error,
if it did work then you'll get some html code, ( this is just to see if the connection is OK )
NOTE : if
step 1 is UNsuccesfull, then skip to
STEP 2 : re-installing wpasupplicant via apt-get
run the command
sudo apt-get install wpasupplicant
NOTE : if
step 2 is succesfull, then you can skip
STEP 3 : re-installing wpasupplicant manually ( if step 1 failed )
When you remove a certain package, you also remove all of it's dependencies and probably configuration files too ( is you "accidentally" purged it )
I'm assuming that you have a debian based distro ( ubuntu is a debian based linux distro ),
if you do, then download the .deb files from here...
you might also need another 2 files which are dependencies of wpasupplicant, you'll find them here...
after downloading them,
navigate to the folder where you downloaded them ( remember, all 3 files should be in the same folder ) and run
sudo dpkg -i *.deb
NOTE : if
step 1 failed, then after
step 3 you should be able to succesfully connect to the internet via the LAN cable
STEP 4 : putting the peices together
you're going to have to link all the components together, you can do that by,
sudo apt-get install ubuntu-desktop
this command will download and install any missing files ( such as network-manager, gnome-indicator, etc ) that might have also been accidentally removed. also, it'll update all the packages to the latest version
STEP 5 : reboot for changes to take effect
run this command in the terminal
shutdown -r now
you should be able to connect to the internet via wifi and enternet after this.