Today I turned on my laptop and Ubuntu asked me to download some updates. I accepted, and after the installation a popup asked to reboot the system.
After system restart, I noticed that the external display was not working anymore. Going into screen settings it seems like only the main (laptop) display is detected.
Then I started checking for some pending update:
$ sudo apt update
Hit:1 https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit:2 http://ppa.launchpad.net/aslatter/ppa/ubuntu focal InRelease
Hit:3 http://it.archive.ubuntu.com/ubuntu focal InRelease
Get:4 http://security.ubuntu.com/ubuntu focal-security InRelease [109 kB]
Hit:5 http://it.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:6 http://packages.microsoft.com/repos/code stable InRelease
Hit:7 http://ppa.launchpad.net/fish-shell/release-3/ubuntu focal InRelease
Hit:8 http://it.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:9 http://ppa.launchpad.net/linuxuprising/shutter/ubuntu focal InRelease
Fetched 109 kB in 1s (146 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
1 package can be upgraded. Run 'apt list --upgradable' to see it.
$ sudo apt list --upgradable -a
Listing... Done
linux-modules-nvidia-460-generic-hwe-20.04/focal-updates 5.8.0-49.55~20.04.1+1 amd64 [upgradable from: 5.8.0-48.54~20.04.1]
linux-modules-nvidia-460-generic-hwe-20.04/focal-security,now 5.8.0-48.54~20.04.1 amd64 [installed,upgradable to: 5.8.0-49.55~20.04.1+1]
I then ran sudo apt upgrade
but it did not change anything, the package update is still pending. Then I tried to install the package manually:
$ sudo apt install linux-modules-nvidia-460-generic-hwe-20.04
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
linux-modules-nvidia-460-generic-hwe-20.04 : Depends: linux-modules-nvidia-460-5.8.0-49-generic (= 5.8.0-49.55~20.04.1+1) but it is not going to be installed
Depends: nvidia-kernel-common-460 (>= 460.56) but 460.39-0ubuntu0.20.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.
Is it possible that the issue is caused by the recent kernel update? I guess it went from 5.8.0.48 to 5.8.0.49:
$ find /boot/vmli*
/boot/vmlinuz
/boot/vmlinuz-5.8.0-48-generic
/boot/vmlinuz-5.8.0-49-generic
/boot/vmlinuz.old
I also tried to boot with 5.8.0.48 from Grub but I get stuck at login screen, the system completely freezes.
Any idea about how to solve?
Thank you very much!