Network manager doesn't reconnect wifi after suspend-Ubuntu 18.04

Asked by Pablo on 2019-01-05

When I reactivate Ubuntu 18.04 after suspend, Network manager doesn't reappear and no wifi. I have to go to terminal and "run sudo systemctl restart NetworkManager" or else use WICD. Has a solution been found for this bug?

This is the output for "sudo lshw -C network; lsb_release -a; uname -a", in case it is useful:
       descripción: Interfaz inalámbrica
       producto: Centrino Advanced-N 6235
       fabricante: Intel Corporation
       id físico: 0
       información del bus: pci@0000:01:00.0
       nombre lógico: wlp1s0
       versión: 24
       serie: c4:85:08:1b:c1:64
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuración: broadcast=yes driver=iwlwifi driverversion=4.15.0-43-generic firmware= ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11
       recursos: irq:29 memoria:f0500000-f0501fff
       descripción: Ethernet interface
       producto: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       fabricante: Realtek Semiconductor Co., Ltd.
       id físico: 0
       información del bus: pci@0000:02:00.0
       nombre lógico: enp2s0
       versión: 06
       serie: e8:03:9a:b3:0a:ea
       tamaño: 10Mbit/s
       capacidad: 1Gbit/s
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuración: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       recursos: irq:19 ioport:2000(size=256) memoria:f0404000-f0404fff memoria:f0400000-f0403fff
LSB Version: core-9.20170808ubuntu1-noarch:printing-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
Linux pabo-530U3C-530U4C 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

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Pablo (ceascolombia) said : #1

Thank you for your help.

If you run:

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi

Does the wifi jump into life?

Pablo (ceascolombia) said : #3

I ran the two commands above and nothing happened.

ONe of the ways in which the error happens is when I am connected to one wifi server and then attempt to connect to another, in this case, when I don't have the password for the 2nd server. The whole Network Manager goes blank.

Pablo (ceascolombia) said : #4

It actually did reconnect after suspend, but the error ocurred when switching wifi servers

Pablo (ceascolombia) said : #5

This time it did not reconnect on suspend, but again, the two commands produced no results.

Can you help with this problem?

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