Connecting to a wireless network on Ubuntu Server 21.04 and Raspberry Pi 4
Add the wifi network configuration to /etc/netplan/50-cloud-init.yaml . Looks like this file is generated by netplan somehow and there’s probably a better way but this persists through restarts so it’s good enough for now.
$ sudo vim /etc/netplan/50-cloud-init.yaml network: ethernets: eth0: dhcp4: true optional: true version: 2 wifis: wlan0: optional: true dhcp4: true access-points: ">": password: ">" Raspberry Pi should connect to the network after restarting.
Next problem: It is preferring the 2.4 GHz wifi over 5 GHz. Or at least it was for me.
We need to hardcode the basic service set identifier (BSSID) of 5 GHz network in the above configuration.
Find out the BSSID for the 5 GHz network:
# Will not return results without sudo $ sudo iwlist wlan0 scan In the output, look for an entry like this for the 5 Ghz network:
Cell 01 - Address: 2C:FD:A1:DD:D3:34 Channel:36 Frequency:5.18 GHz (Channel 36) Quality=56/70 Signal level=-54 dBm Encryption key:on ESSID:">" The thing after Address: is the BSSID.
Add it to /etc/netplan/50-cloud-init.yaml on same indentation level as password .
network: ethernets: eth0: dhcp4: true optional: true version: 2 wifis: wlan0: optional: true dhcp4: true access-points: ">": password: ">" bssid: "2C:FD:A1:DD:D3:34" Done. Restart and Raspberry Pi should connect to the 5 Ghz network.
How to setup of Raspberry Pi 3 onboard WiFi for Ubuntu Server with ‘netplan’?
How to setup of Raspberry Pi 3 B+ onboard WiFi for Ubuntu Server 18.04? In particular, with netplan ? Existing answers, such as «How to use onboard wifi on Raspberry Pi 3 with Ubuntu Server 16.04?», no longer seem to apply since /etc/network/interfaces states that netplan has replaced ifupdown .
# ifupdown has been replaced by netplan(5) on this system. See # /etc/netplan for current configuration. ##### release ########################### Distributor ID: Ubuntu Description: Ubuntu 18.04.2 LTS Release: 18.04 Codename: bionic ##### kernel ############################ Linux 4.15.0-1034-raspi2 #36-Ubuntu SMP PREEMPT Fri Apr 5 06:21:41 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux Since 18.04.2 the linux-firmware and linux-firmware-raspi2 packages now contain the necessary files for the built-in WiFi on the Pi 3B and 3B+.
*-network:0 DISABLED description: Wireless interface physical id: 2 logical name: wlan0 serial: b8:27:eb:69:f2:3b capabilities: ethernet physical wireless configuration: broadcast=yes driver=brcmfmac driverversion=7.45.18 firmware=01-6a2c8ad4 multicast=yes wireless=IEEE 802.11 *-network:1 description: Ethernet interface physical id: 3 logical name: eth0 serial: b8:27:eb:3c:a7:6e size: 1Gbit/s capacity: 1Gbit/s capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=lan78xx driverversion=1.0.6 duplex=full ip=172.16.76.7 link=yes multicast=yes port=MII speed=1Gbit/s To configure netplan, save configuration files under /etc/netplan/ with a .yaml extension (e.g. /etc/netplan/config.yaml ), then run sudo netplan apply .
. yet, no guideance specific to a RaspberryPi. . in particular, with respect to the existing /etc/netplan/50-cloud-init.yaml file on the RaspberryPi Ubuntu Server install.
##### Netplan config #################### [/etc/netplan/50-cloud-init.yaml] # This file is generated from information provided by # the datasource. Changes to it will not persist across an instance. # To disable cloud-init's network configuration capabilities, write a file # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: # network: network: version: 2 ethernets: eth0: dhcp4: true match: macaddress: set-name: eth0 So, given the use of netplan and default generated .yaml file. How should one add a WiFi network SSID and password? And leave the existing wired ethernet in place?
Connect raspberry pi 4 with ubuntu server to wifi
I have a Raspberry Pi 4. As I do not have a screen and keyboard available, I connect it through an Ethernet cable. I want the Raspberry Pi to be connected to the Wi-Fi and not via Ethernet. I tried to update /etc/network/interfaces to:
auto lo iface lo inet loopback auto wlan0 iface wlan0 inet static address 192.168.1.150 netmask 255.255.255.0 gateway 192.168.1.1 wpa-essid MYESSID12345 wpa-psk MYPASSWORD$1234567 eth0: flags=4163 mtu 1500 inet 192.168.1.41 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 fe80::dea6:32ff:fe62:c4fc prefixlen 64 scopeid 0x20 ether dc:a6:32:62:c4:fc txqueuelen 1000 (Ethernet) RX packets 118 bytes 13529 (13.5 KB) RX errors 0 dropped 52 overruns 0 frame 0 TX packets 63 bytes 9012 (9.0 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 168 bytes 12300 (12.3 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 168 bytes 12300 (12.3 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 wlan0: flags=4099 mtu 1500 ether dc:a6:32:62:c4:fd txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 iwconfig wlan0 essid name key password iwconfig wlan0 essid name key s:password Error for wireless request "Set Encode" (8B2A) : SET failed on device wlan0 ; Invalid argument. I also tried iwconfig wlan0 essid name using wps but it does not work. I also tried with wpasupplicant . Creating /etc/wpa_supplicant.conf with
and then running sudo wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf -D wext But I have errors too.
Successfully initialized wpa_supplicant ioctl[SIOCSIWENCODEEXT]: Invalid argument ioctl[SIOCSIWENCODEEXT]: Invalid argument How to setup the Raspberry Pi 3 onboard WiFi for Ubuntu Server 18.04 with netplan?
How to setup of Raspberry Pi 3 B+ onboard WiFi for Ubuntu Server 18.04? In particular, with netplan ? This is a clean install of the Ubuntu Server 18.04 image for Raspberry Pi 3. File: ubuntu-18.04.2-preinstalled-server-arm64+raspi3.img.xz . The installed file /etc/network/interfaces states that netplan has replaced ifupdown .
# ifupdown has been replaced by netplan(5) on this system. See # /etc/netplan for current configuration. # This file is generated from information provided by # the datasource. Changes to it will not persist across an instance. # To disable cloud-init's network configuration capabilities, write a file # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: # network: network: version: 2 ethernets: eth0: dhcp4: true match: macaddress: set-name: eth0 To configure netplan, save configuration files under /etc/netplan/ with a .yaml extension (e.g. /etc/netplan/config.yaml ), then run sudo netplan apply .
. yet, no guideance specific to a RaspberryPi. . in particular, with respect to the existing /etc/netplan/50-cloud-init.yaml file on the RaspberryPi Ubuntu Server install. What would be the netplan template for the RaspberryPi? Can the existing /etc/cloud/cloud.cfg.d be left enabled? What is lost if cloud.cfg.d on the Raspberry Pi is disabled? . (. and, wondering . how much of this issue needs RaspPi knowledge vs. Ubuntu knowledge.) Note: Since this question is at the intersection of Ubuntu & Raspberry Pi, a related question was also posted on AskUbuntu.