No network after installing kernel

[Valtam]

You can also try:

Code:

sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/g' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

after my previous post.

[CSNLinux]

There is no need for the 4.12 kernel either, so remove that before you do anything else first via Lite Tweaks.

For some funny unknown reason Kernel 4.12 is not displayed here



Or is it here, but not named the same way?

[trinidad]

You're probably running on it. What does uname -srv show?

TC

[CSNLinux]

You're probably running on it. What does uname -srv show?

TC

[firenice03]

So yes you're booted to 4.12, reboot choosing advanced options selecting an earlier kernel (Choose 4.4.0-112)
Once booted to 4.4.0-112 will be removable in Lite Tweaks.. 4.12 isn't showing in tweaks now cause your in it

Once 4.12 is removed you can reboot and typical LL option will boot back to 4.4.0-112

Now you should be back - but wanted to get you past your last post - Not to step on TC or others toes, maybe I saved them from typing the same

The newer kernel may not work with your hardware as you're seeing, some of my older stuff gets flaky if I try higher than 4.4..


If still in 4.12
But the hard block as mentioned could be a keystroke (mine is fn+F2) look for the tower with waves.. Or post your laptop model and we can confirm..
May want to check NICs are not disabled in Network Manager
Clicking the wireless/network icon ensuring checks by Enable Wi-Fi and Enable Networking

[trinidad]

Yep. You have to select the next oldest kernel from Advanced Options in the grub menu and boot that one first like Jerry said. Once you're on that 4.4.x-x you can delete 4.12 from Lite Tweaks. Hold down the shift key when you turn on the computer and you should get the grub menu where the Advanced Options are. Arrow key to scroll down to it. Enter to open it. Enter to boot the selected kernel. Most of this is in help manual.

TC

[CSNLinux]

reboot choosing advanced options selecting an earlier kernel (Choose 4.4.0-112)

Done!

Once 4.12 is removed you can reboot and typical LL option will boot back to 4.4.0-112

Done!

look for the tower with waves.

Found it, pressed it, nothing happened

May want to check NICs are not disabled in Network Manager

Nothing is there in my network options
I see four options

1. Network
   
2. Network Connections (with folder Icon)
   
3. Network Connections ( with 2 screens Icon)
   
4. Network Share Settings
   

Clicking the wireless/network icon

This Icon disappeared after the installation of Kernel 4.12 and hasn't return after de-instalation

[CSNLinux]

Are we all stuck on the same page here?
Can imagine!
I thought about a clean install of LL on my laptop but I remembered that I had WIFI issues from day one.

Hmmm...what to do!?

[trinidad]

Now that you're on the 4.4.x-x kernel series run the commands Jerry suggested.
 
1) sudo rfkill unblock all

2) sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/g' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

TC

[CSNLinux]

Now that you're on the 4.4.x-x kernel series run the commands Jerry suggested.
 
1) sudo rfkill unblock all

2) sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/g' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

TC

Oké that was a lot of typing.
Result

Code:

sed: can't read /etc/NetworkManager/conf.d/default-wifi-powersafe-on.conf:
No such file or directory