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--- public:linux:rpi-buster-eduroam-campusroam-wifi-bug [2021/01/29 12:35] – timdv91
+++ public:linux:rpi-buster-eduroam-campusroam-wifi-bug [2023/02/26 04:51] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
 ===== Intro =====
 Connecting an Raspberry PI to the eduroam or campusroam wifi network results in intermittent connections on Raspbian Buster.
-Following tutorial explains how to fix this issue, but a working internet connection is required!
+\\ Following tutorial explains how to fix this issue, a working internet connection is required!
-===== Solution =====
+===== Solution: Downgrading wpasupplicant =====
-==== Downgrading wpasupplicant: ====
+==== 1) Setting sources.list file: ====
-Add **one** of the following lines to your **'/etc/apt/sources.list'** file. Comment previously existing 'deb' lines with '#'
+Add **one** of the following lines to your **'/etc/apt/sources.list'** file. Comment out previously existing lines with '#'
-<code bash>
+<code bash Pick 1 out of two lines!>
 deb http://raspbian.raspberrypi.org/raspbian/ stretch main contrib non-free rpi
 deb http://raspbian.raspberrypi.org/raspbian/ jessie main contrib non-free rpi
 #Note: copy pasting in a terminal using the keyboard shortcuts requires an additional 'shift' --> 'ctrl + shift + c' or 'ctrl + shift + v'
 </code>
-Full example:
+Run **'sudo apt-get update'** to complete the previous step.
+__**Full example**__
+<code bash Full example>
+sudo nano /etc/apt/sources.list                                                    #Type this command in cmd, followed by 'enter' to open the file in nano
+deb http://raspbian.raspberrypi.org/raspbian/ stretch main contrib non-free rpi    # paste this line using 'ctrl + shift + v'
+# Use the '#' in front of previous existing lines to comment them out!
+# press 'ctrl + o' to save the file!
+# press 'ctrl + x' to exit nano!
+sudo apt-get update                                                                # Once existed, continue with updating aptitude to make the changes take effect.
+</code>
+==== 2) Checking and installing the available 'wpasupplicant' versions: ====
+The previous step should have downgraded the 'wpasupplicant' versions available for installation on your system. Run a check using **'apt-cache policy wpasupplicant'**
+\\ Follow the previous step with **'sudo apt-get install <package of choice>'**
+<code bash Type: >
+apt-cache policy wpasupplicant                                                     # this prints the wpasupplicant versions available on your system.
+# Select one of following versions (stretch or jessie). Selection is based on your config inside /etc/apt/sources.list
+# Note that the version numbers could be different on your system! Check the apt-cache policy wpasupplicant output for certainty!
+sudo apt-get install sudo apt-get install wpasupplicant=2:2.4-1+deb9u7 -t stretch  # package of choice is printed by the previous command.
+sudo apt-get install wpasupplicant=2.3.1+deb8u10 -t jessie                         # package of choice is printed by the previous command.
+</code>
+{{:public:linux:eduroamcampusroam:apt-cache_policy_wpasupplicant.png?600|Example,the print-screen was taken after downgrading wpasupplicants on my system!}}
+\\ //Note: The print-screen was taken after downgrading wpasupplicants on my system!//
+==== 3) Set the wifi configuration correctly: ====
+Open up the **/etc/wpa_supplicant/wpa_supplicant.conf** file using nano.
 <code bash>
-sudo nano /etc/apt/sources.list #press enter to open the file
+sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
-deb http://raspbian.raspberrypi.org/raspbian/ stretch main contrib non-free rpi # paste this line using 'ctrl + shift + v'
+# press 'ctrl + o' to save the file!
-# Comment out the previously existing lines for certainty --> use the '#' character to comment out lines.
+# press 'ctrl + x' to exit nano!
-# press 'ctrl + o' to save the file.
-# press 'ctrl + x' to exit nano.
 </code>
+Add additional lines to the file:
+<code bash | wpa_supplicant.conf>
+ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
+update_config=1
+country=BE
+network={
+         ssid="campusroam-2.4"
+         scan_ssid=1
+         mode=0
+         proto=RSN
+         key_mgmt=WPA-EAP
+         eap=PEAP
+         identity="u******@kuleuven.be"
+         ca_cert="/usr/share/ca_certificates/mozilla/DigiCert_Assured_ID_Root_CA.crt"
+         password="*******" # Ask google if you want this encrypted.
+         phase1="peapleabel=auto peapver=auto"
+         pahse2="auth=MSCHAPV2"
+}
+</code>
+<code>
+# press 'ctrl + o' to save the file!
+# press 'ctrl + x' to exit nano!
+</code>
+__**Reboot your system!**__
+==== 4) Optionally - Change DNS server: ====
+First make sure you have network connection using **ip a**.
+\\ Secondly if you're connected, check your current DNS settings using **'cat /etc/resolv.conf'**
+<code bash>
+ip a
+cat /etc/resolv.conf
+</code>
+Use nano to open the **'/etc/dhcpcd.conf'** file
+add the following to it: **'static domain_name_server=8.8.8.8 134.58.126.3'**
+<code bash>
+sudo nano /etc/dhcpcd.conf
+static domain_name_server=8.8.8.8 134.58.126.3  # change the secondary '134.58.126.3' ip address to one of the addresses shown inside your '/etc/resolv.conf' file.
+</code>
+__**Reboot your system!**__