WLAN configutation error: setup host server with wifi instead of using ethernet

T

tabita

Member
Sep 16, 2021
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Hi all,

I'm trying use my old laptop as a proxmox testing server.
I do not want it to be attached to ethernet and i want it to connect to my network via wifi.

To configure it i'm connected via ethernet using ssh protocol.

I did some research and found this wiki https://pve.proxmox.com/wiki/WLAN.
I followed the instructions available there.

From there i went through the instructions for WPA_supplicant https://wiki.debian.org/WiFi/HowToUse#wpa_supplicant.

Code: 
#install wpasupplicant
apt-get install wpasupplicant -y

#restrict the permissions of /etc/network/interfaces
chmod 0600 /etc/network/interfaces

#calc WPA PSK hash for mySSID and pipe it into /etc/wpa_supplicant/wpa_supplicant.conf
su -l -c "wpa_passphrase myssid my_very_secret_passphrase > /etc/wpa_supplicant/wpa_supplicant.conf"

#check /etc/wpa_supplicant/wpa_supplicant.conf and add the below
ctrl_interface=/run/wpa_supplicant # Giving configuration update rights to wpa_cli
ctrl_interface_group=wheel
update_config=1

ap_scan=1 # AP scanning

country=US # ISO/IEC alpha2 country code in which the device is operating
network={
        ssid="myssid"
        #psk="my_very_secret_passphrase"
        psk=ccb290fd4fe6b22935cbae31449e050edd02ad44627b16ce0151668f5f53c01b
}

#save the file

systemctl reenable wpa_supplicant.service
service wpa_supplicant restart
service dhcpcd restart # failed to restart dhcpd.service: Unit dhcp.service not found
wpa_supplicant -B -Dwext -i <interface> -c/etc/wpa_supplicant/wpa_supplicant.conf

ifup <interface>
ifconfig <interface> up

After the above configuration my wifi interface still seem to be down and not connecting

Code: 
debugging

>>>ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
    link/ether 48:ba:4e:ef:08:f2 brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether f8:34:41:f4:0b:73 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.15/24 scope global wlp2s0
       valid_lft forever preferred_lft forever
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 48:ba:4e:ef:08:f2 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.10/24 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::4aba:4eff:feef:8f2/64 scope link
       valid_lft forever preferred_lft forever


>>>ip r

default via 192.168.1.1 dev vmbr0 proto kernel onlink
192.168.1.0/24 dev vmbr0 proto kernel scope link src 192.168.1.10
192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.15 linkdown <---- Linkdown is because the wifi interface is down?

>>>cat /etc/network/inferfaces

auto lo
iface lo inet loopback

iface enp0s31f6 inet manual

allow-hotplug wlp2s0
iface wlp2s0 inet static
        address 192.168.1.15/24
        gateway 192.168.1.1
        wpa-ssid myssid
        wpa-psk ccb290fd4fe6b22935cbae31449e050edd02ad44627b16ce0151668f5f53c01b

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.10/24
        gateway 192.168.1.1
        bridge-ports enp0s31f6
        #bridge-ports none
        bridge-stp off
        bridge-fd 0

        #post-up echo 1 > /proc/sys/net/ipv4/ip_forward
        #post-up iptables -t nat -A POSTROUTING -s '192.168.1.0/24' -o wlp2s0 -j MASQUERADE
        #post-down iptables -t nat -D POSTROUTING -s '192.168.1.0/24' -o wlp2s0 -j MASQUERADE

>>>iwconfig wlp2s0

wlp2s0    IEEE 802.11  ESSID:off/any
          Mode:Managed  Access Point: Not-Associated   Tx-Power=-2147483648 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on

>>> ifup wlp2s0 -v

info: requesting link dump
info: requesting address dump
info: requesting netconf dump
info: loading builtin modules from ['/usr/share/ifupdown2/addons']
info: module openvswitch not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: module openvswitch_port not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: module ppp not loaded (module init failed: no /usr/bin/pon found)
info: module batman_adv not loaded (module init failed: no /usr/sbin/batctl found)
info: executing /sbin/sysctl net.bridge.bridge-allow-multiple-vlans
info: module mstpctl not loaded (module init failed: no /sbin/mstpctl found)
info: executing /bin/ip rule show
info: executing /bin/ip -6 rule show
info: module ethtool not loaded (module init failed: /sbin/ethtool: not found)
info: address: using default mtu 1500
info: address: max_mtu undefined
info: executing /usr/sbin/ip vrf id
info: mgmt vrf_context = False
info: dhclient: dhclient_retry_on_failure set to 0
info: executing /bin/ip addr help
info: address metric support: OK
info: module ethtool not loaded (module init failed: /sbin/ethtool: not found)
info: module ppp not loaded (module init failed: no /usr/bin/pon found)
info: module mstpctl not loaded (module init failed: no /sbin/mstpctl found)
info: module batman_adv not loaded (module init failed: no /usr/sbin/batctl found)
info: module openvswitch_port not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: module openvswitch not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: looking for user scripts under /etc/network
info: loading scripts under /etc/network/if-pre-up.d ...
info: loading scripts under /etc/network/if-up.d ...
info: loading scripts under /etc/network/if-post-up.d ...
info: loading scripts under /etc/network/if-pre-down.d ...
info: loading scripts under /etc/network/if-down.d ...
info: loading scripts under /etc/network/if-post-down.d ...
info: using mgmt iface default prefix eth
info: processing interfaces file /etc/network/interfaces
info: wlp2s0: running ops ...
info: executing /sbin/sysctl net.mpls.conf.wlp2s0.input=0
info: executing /etc/network/if-pre-up.d/wireless-tools
info: executing /etc/network/if-pre-up.d/wpasupplicant
error: wlp2s0 : wlp2s0: pre-up cmd '/etc/network/if-pre-up.d/wpasupplicant' failed: returned 1 (wpa_supplicant: /sbin/wpa_supplicant daemon failed to start
)
info: exit status 0

>>> lshw -class network
  *-network DISABLED
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 3a
       serial: f8:34:41:f4:0b:73
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.11.22-4-pve firmware=36.ca7b901d.0 8000C-36.ucode ip=192.168.1.15 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:130 memory:e1100000-e1101fff

>>> rfkill list all
0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no

>>> dmesg | grep -i firmware
[    0.187070] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    8.138421] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    8.147672] Bluetooth: hci0: Firmware revision 0.0 build 10 week 41 2018
[    8.173003] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27)
[    8.183313] iwlwifi 0000:02:00.0: loaded firmware version 36.ca7b901d.0 8000C-36.ucode op_mode iwlmvm

From my understanding during the troubleshooting phase it seems that wpa_supplicant fails because the wifi interface seems to be down.
Even if i try to bring it up it does not come up.

I would really appreciate some help to resolve this issue.
Thanks
 
I found your post while trying to get wifi working on ubuntu server 20.04

what you posted helped me find success with a couple tweaks

try this...
tabita said:
# failed to restart dhcpd.service: Unit dhcp.service not found
Click to expand...
install dhcpcd

$ sudo apt install dhcpcd5 -y

you may nned to disable dhcpcd after you're up and running to eliminate secondary addresses

$ sudo systemctl stop dhcpcd
$ sudo systemctl disable dhcpcd

you could also do your configurations inside /etc/dhcpcd.conf and set everything in /etc/network/interfaces to manual. then it should use dhcpcd.conf for configuration


disconnect ethernet and reboot. ping to test

$ ping google.com

good luck
 
Last edited:
jeeyhmn said:
I found your post while trying to get wifi working on ubuntu server 20.04

what you posted helped me find success with a couple tweaks

try this...

install dhcpcd

$ sudo apt install dhcpcd5 -y

you may nned to disable dhcpcd after you're up and running to eliminate secondary addresses

$ sudo systemctl stop dhcpcd
$ sudo systemctl disable dhcpcd

you could also do your configurations inside /etc/dhcpcd.conf and set everything in /etc/network/interfaces to manual. then it should use dhcpcd.conf for configuration


disconnect ethernet and reboot. ping to test

$ ping google.com

good luck
Click to expand...

Hey,

I'm glad that my question helped you.

I'm still trying to get my wifi working. I installed dhcpcd but it did not work.
I really can't understand why it's not working.
 
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