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I am using Ubuntu 18.04 in my HP Pavilion DV4 laptop. After installing it shows that airplane mode is on by hardware switch

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and there is no airplane mode disable switch I found in network

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as a result WIFI and Bluetooth not working

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When running rfkill list all

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Also when I run on widows and press F12 airplane mode is on and off but in Ubuntu it doesn't work

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So how can I disable airplane, enable WIFI and Bluetooth

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2 Answers 2

Reset to default
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After a long read and research, I discovered the issue is with acpi=off as a kernel boot parameter.

  1. Edit your kernel boot parameter with:

sudo nano /etc/default/grub

  1. Look for the line with GRUB_CMDLINE_LINUX_DEFAULT="quite splash acpi=off" <--parameters may defer based on your system - ->

Within the " " (quotes), replace acpi=off or any other acpi parameters with acpi_osi=!.

e.g.: GRUB_CMDLINE_LINUX_DEFAULT="quite splash acpi_osi=!"

  1. Press Ctrl+O to Save and Confirm Change

Press Ctrl+X to return to terminal

  1. Update grub with :

sudo update-grub

  1. Reboot your machine.

Everything should be working fine. :)

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My wifi does not work after installing Ubuntu on an HP Pavilion DV-4 Laptop, I found that the touch switch that used to turn wifi off and on now toggles it into and out of airplane mode, I think that is the manual switch the system is referencing. At least it was for me.

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