Ubuntu 20.04.1 LTS unable to access Wifi

networking dual-boot wireless 20.04

6,208

Edit your /etc/netplan/*.yaml... keeping the exact same indentation, spacing, and no tabs...

sudo -H gedit /etc/netplan/*.yaml # use the correct .yaml file name

# Let NetworkManager manage all devices on this system
#
network:
  version: 2
  renderer: NetworkManager

sudo netplan generate

sudo netplan apply

reboot

Then go to the NetworkManager applet at the right side of the top panel and select your wifi network.

Update #1:

boot into Windows
open the Power control panel
choose change what the power buttons do
choose change options that are unavailable
uncheck fast startup
close the Power control panel
open an administrative command prompt window
type powercfg /h off
type chkdsk /f c:
approve to run chkdsk at next reboot
type chkdsk /f x: (replacing "x" with drive letters of other visible NTFS partitions)
reboot into Windows to let chkdsk run on drive C:

6,208

Author by

chqdrian

currently working in Scala and Python

Updated on September 18, 2022

Comments

chqdrian over 1 year

I've recently installed Ubuntu 20.04.1 LTS in my laptop, every time, when I turn on the laptop, the Wifi option is disabled.
In order to enable it, I've had to run the below command and restart my laptop (everytime).

sudo service network-manager restart

Is there any way, to make Ubuntu automatically detect Wifi, without having to restart the network-manager?

I've disabled Secure boot,
I was unable to connect to Wifi, when I was installing Ubuntu.
I'm dual booting Ubuntu with Windows 10

Please let me know, if you guys know, a permanent fix for this problem,

cat /etc/network/interfaces
output:

cat: /etc/network/interfaces: No such file or directory

cat /etc/netplan/*.yaml
output:

network:
  renderer: NetworkManager
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManage

sudo lshw -C network
output:

*-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0
       version: 15
       serial: b0:6e:bf:ab:d5:4e
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII
       resources: irq:16 ioport:d000(size=256) memory:df304000-df304fff memory:df300000-df303fff
  *-network
       description: Wireless interface
       product: Wireless 8265 / 8275
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlp4s0
       version: 78
       serial: 00:e1:8c:42:0f:18
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.4.0-42-generic firmware=36.77d01142.0 ip=192.168.1.4 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:132 memory:df100000-df101fff

lshw
output:

  *-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0
       version: 15
       serial: b0:6e:bf:ab:d5:4e
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII
       resources: irq:16 ioport:d000(size=256) memory:df304000-df304fff memory:df300000-df303fff
  *-network UNCLAIMED
       description: Network controller
       product: Wireless 8265 / 8275
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       version: 78
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: memory:df100000-df101fff

Boris Hamanov almost 4 years

Desktop or Server installation? Edit your question and show me cat /etc/network/interfaces and cat /etc/netplan/*.yaml and sudo lshw -C network. Start comments to me with @heynnema or I'll miss them.
Pilot6 almost 4 years

Disable Fast Start feature in Windows.
chqdrian almost 4 years

@Pilot6, I also tried disabling the Fast start.
chqdrian almost 4 years

This issue, occurs when I switch to Windows and then switch back to Ubuntu

chqdrian almost 4 years

I updated the .yaml file, and restarted the laptop, I was able to use the wifi in the applet, but when I switch to Windows and switch back to Ubuntu, the wifi option is gone again.
Boris Hamanov almost 4 years

You did the sudo netplan commands, yes? Boot to the GRUB menu, choose Advanced Options, and boot to the oldest kernel that's showing. You have -42 now. Show me the lshw command again, when the wifi is not working.
chqdrian almost 4 years

I did sudo netplan command, I've added the lshw command output (when the wifi option is not visible) in the question.
Boris Hamanov almost 4 years

Did you boot to the older kernel? If so, is the wifi showing there? Rather than use the lshw command by itself, please show me sudo lshw -C network again when the wifi is not working.
chqdrian almost 4 years

the system fails to load when I run older kernel (-26), it stops at Starting modem manager ... and I've updated the question, with latest ```sudo lshw -C network`` command output for 42 kernel.
Boris Hamanov almost 4 years

@chqdrian Very strange. Show me sudo dmidecode -s bios-version and tell me the exact make/model # of your laptop.
chqdrian almost 4 years

Asus FX503VD.308 Intel® Core™ i7-7700HQ CPU @ 2.80GHz × 8 GeForce GTX 1050/PCIe/SSE2 / GeForce GTX 1050/P OS type - 64-bit
chqdrian almost 4 years

I installed Ubuntu 20.04 before (without dual booting Windows) few days back, there was no issues. But, for personal reasons, I had to install again Windows(dual boot), that's when I started facing issues. If I used only Ubuntu continuously (without booting Windows), the Wifi is working fine, only when I login into Windows and login into Ubuntu, the wifi issue occurs, it's like it's reverting back to previous state. I've created 4 partitions of my 1TB hard disk, 1 partition for Windows, 1 partition for Ubuntu and 2 common drives
Boris Hamanov almost 4 years

@chqdrian Your BIOS is current. Please see Update #1 in my answer. Report back.
chqdrian almost 4 years

I followed your instructions, now I'm able to access my wifi, (even after switching to windows.) If I could double upvote your answer, I would. Thanks @heynnema
Boris Hamanov almost 4 years

@chqdrian Great news! Thanks for the feedback.