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#1 2020-04-25 11:05:13
- ashic
- Member
- Registered: 2020-01-22
- Posts: 68
(Solved) Can't get network after recent update
I ran pacman -Syyu last night, and it upgraded to linux 5.6.6 (was using 5.6.4 before). However, after reboot, it appears my laptop is connecting to wifi, and then deauthenticating with reason 3. Looking around the internet, I see a number of things can cause this, but I don't know enough to understand what to try first. I'm also trying to connect to a wired connection, and get the same result (as in, it tries to connect, then I'm not connected. And it tries to reconnect periodically. When I try to shut down the Network Manager awaiter service holds things up and I have to hold the power button for five seconds. I've tried downgrading the kernel to 5.6.4, but that hasn't helped. I'd appreciate any help in resolving the matter.
Here are a few outputs:
sudo systemctl list-unit-files --state=enabled
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UNIT FILE STATE VENDOR PRESET
org.cups.cupsd.path enabled disabled
autovt@.service enabled disabled
avahi-daemon.service enabled disabled
bluetooth.service enabled disabled
bumblebeed.service enabled disabled
dbus-fi.w1.wpa_supplicant1.service enabled disabled
dbus-org.bluez.service enabled disabled
dbus-org.freedesktop.Avahi.service enabled disabled
dbus-org.freedesktop.ModemManager1.service enabled disabled
dbus-org.freedesktop.nm-dispatcher.service enabled disabled
display-manager.service enabled disabled
docker.service enabled disabled
getty@.service enabled enabled
haveged.service enabled disabled
lightdm.service enabled disabled
ModemManager.service enabled disabled
NetworkManager-dispatcher.service enabled disabled
NetworkManager-wait-online.service enabled disabled
NetworkManager.service enabled disabled
org.cups.cupsd.service enabled disabled
snmpd.service enabled disabled
systemd-timesyncd.service enabled enabled
wpa_supplicant.service enabled disabled
avahi-daemon.socket enabled disabled
org.cups.cupsd.socket enabled disabled
remote-fs.target enabled enabled
26 unit files listed.systemctl list-units | grep -iE '(net|dhcp|wpa|conn|wicd)'
=============================================================
sys-devices-pci0000:00-0000:00:14.0-usb2-2\x2d2-2\x2d2.1-2\x2d2.1.3-2\x2d2.1.3:1.0-net-enp0s20f0u2u1u3.device loaded active plugged RTL8153 Gigabit Ethernet Adapter
sys-devices-pci0000:00-0000:00:1c.0-0000:02:00.0-net-wlp2s0.device loaded active plugged Wireless 8260
sys-devices-virtual-net-docker0.device loaded active plugged /sys/devices/virtual/net/docker0
sys-subsystem-net-devices-docker0.device loaded active plugged /sys/subsystem/net/devices/docker0
sys-subsystem-net-devices-enp0s20f0u2u1u3.device loaded active plugged RTL8153 Gigabit Ethernet Adapter
sys-subsystem-net-devices-wlp2s0.device loaded active plugged Wireless 8260
sys-fs-fuse-connections.mount loaded active mounted FUSE Control File System
● NetworkManager-wait-online.service loaded failed failed Network Manager Wait Online
NetworkManager.service loaded active running Network Manager
snmpd.service loaded active running Simple Network Management Protocol (SNMP) Daemon
systemd-timesyncd.service loaded active running Network Time Synchronization
wpa_supplicant.service loaded active running WPA supplicant
network-online.target loaded active active Network is Online
network.target loaded active active Network Last edited by ashic (2020-04-25 13:08:34)
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#2 2020-04-25 11:53:00
- ashic
- Member
- Registered: 2020-01-22
- Posts: 68
Re: (Solved) Can't get network after recent update
Ok... some progress... enabling and starting dhcpcd, then stopping and starting NetworkManager fixes the wired connection issue. However, it's still not connecting to wifi. It's trying to connect, seems to connect, but then can't. dmesg shows deauthenticating reason 3.
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#3 2020-04-25 12:39:03
- Lone_Wolf
- Administrator
- From: Netherlands, Europe
- Registered: 2005-10-04
- Posts: 13,285
Re: (Solved) Can't get network after recent update
ModemManager.service enabled disabled
ModemManager is only needed in some special cases / devices , do you have one of those ?
Which dhcp client have you setup networkmanager to use ?
https://wiki.archlinux.org/index.php/Ne … HCP_client
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
clean chroot building not flexible enough ?
Try clean chroot manager by graysky
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#4 2020-04-25 13:07:35
- ashic
- Member
- Registered: 2020-01-22
- Posts: 68
Re: (Solved) Can't get network after recent update
@Lone_Wolf
I have no idea what ModemManager is, so just disabled it 
Your linked solved the issue 
The steps I took are:
1. sudo systemctl disable dhcpcd --now
I'd enabled it before, and it'd solved my wired connection. But apparently we shouldn't run it with the systemctl service if using Network Manager.
2. I added a /etc/NetworkManager/conf.d/dhcp-client.conf file with the following content as per your link:
[main]
dhcp=dhclientThat's resolved all issues.
I'm almost certain I did this before, but the update (or something else) had wiped the config. Perhaps I'm imagining it. Anyhow, thanks a lot!
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