17

I had this issue with sound Only "Dummy output" (sound) in Ubuntu 20.04 after reboot - Broken driver / module after a reboot. I was missing package linux-modules-extra-5.4.0-40-generic.

Now I rebooted again (I am not sure think I know if I also rebooted at some point in between), and I had no sound or wifi. I checked and now I have kernel 5.4.0-42.46, and I didn't have linux-modules-extra-5.4.0-42-generic. So I guessed there was an automatic kernel update (I don't recall doing it myself), without installing that package, waiting for me to reboot and suffer from the missing package.

My questions are:

  1. Why would an automatic kernel update not install linux-modules-extra?
  2. Can I configure my system to have the package installed whenever an update takes place?

Related:

Kernel modules missing after update to 5.4.0-37

What is the linux-image-extra package for and do I need it?

sancho.s ReinstateMonicaCellio
  • 15,307

3 Answers3

14

You need to have linux-generic meta package installed.

It will pull all other necessary kernel packages including modules, modules-extra, headers, etc.

This package may be missing if you manually removed some kernel packages.

To fix issues with missing kernel packages run in a terminal:

sudo apt install linux-generic
Pilot6
  • 92,041
5

This problem happens when a system that was upgraded, but the hardware modules got moved to the HWE layer. APT will keep the auto-install marked for the linux-generic meta package, but you need it to instead use linux-generic-hwe-20.04 meta, so that linux-modules-extra-... and linux-headers-generic-hwe... are installed automatically.

Fix it by running

sudo apt install linux-generic-hwe-20.04

sicvolo
  • 209
0

Can you help me work out how I should modify the above suggstions to work in my case? I've the same issue that each time the kernel updates I have to reinstall the appropriate modules-extra package. The package I missed most recently was linux-modules-extra-5.15.0-1032-raspi when updating from 1030-raspi. I'm running Ubuntu 22.04.2 LTS (GNU/Linux 5.15.0-1032-raspi aarch64). So it's not the generic version I need I guess, but perhaps raspi?

So do I need something like sudo apt install linux-raspi-hwe-22.04.2 or sudo apt install linux-raspi-22.04.2 or simply sudo apt install linux-raspi to force the modules-extra package to update automatically with each update?

After trying the above three options (unsuccessfully - see comments below) I tried sudo apt install linux-modules-extra-raspi (see https://answers.launchpad.net/ubuntu/+source/linux-raspi/+question/700375) and at least something installed this time. Fingers crossed this works for the next kernel update.

johnanon
  • 3