[SOLVED] Monitor stopped working after updating

[Skava]

Hello,

Today I updated my packages after noticing the icon show up in the task bar. I installed the updates initially via Discover. After the updates were done installing, I then did a sudo apt update on the terminal and rebooted my PC. Upon loading into my desktop, my second monitor stopped working; nothing is being displayed. Before the update, everything was working fine, I could use both monitors without issues. I didn't install any other third-party packages (other than the ones that were part of the update).

I tried loading the Nvidia X Server Settings and all I'm seeing is a blank window form. Searching for a solution to the resolve that issue led me to a suggestion to use ubuntu-drivers autoinstall but I'm getting an unmet dependencies error for libncidia packages:

WARNING:root:_pkg_get_support nvidia-driver-390: package has invalid Support Legacyheader, cannot determine support level
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.
nvidia-driver-510 : Depends: libnvidia-gl-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Depends: libnvidia-extra-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Depends: libnvidia-decode-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Depends: libnvidia-encode-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Depends: xserver-xorg-video-nvidia-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Depends: libnvidia-cfg1-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Depends: libnvidia-fbc1-510 (= 510.47.03-0ubuntu0.20.04.1) but it is not going to be installed
Recommends: libnvidia-compute-510:i386 (= 510.47.03-0ubuntu0.20.04.1)
Recommends: libnvidia-decode-510:i386 (= 510.47.03-0ubuntu0.20.04.1)
Recommends: libnvidia-encode-510:i386 (= 510.47.03-0ubuntu0.20.04.1)
Recommends: libnvidia-fbc1-510:i386 (= 510.47.03-0ubuntu0.20.04.1)
Recommends: libnvidia-gl-510:i386 (= 510.47.03-0ubuntu0.20.04.1)
E: Unable to correct problems, you have held broken packages.


The updates themselves looked like nvidia packages. I thought they were driver updates so didn't think much of them and went with the install. I've attached a apt history log (as a txt file), it seems like some of the removed packages has borked my drivers, although I don't know enough to know what any of the packages do.

My PC specs:
OS: Ubuntu 20.04.3 LTS x86_64
CPU: i7 10700k
Motherboard: Msi z490 Tomahawk MAG
RAM: Corsair Vengeance 32GB
Graphics Card: NVIDIA GeForce GTX 1080
Storage: 1TB Kingston m2

One other thing; I load my OS to use 5.4.0-26-generic kernel version 5.4.0-26-generic (manually do it through GRUB) as that version allows me to have audio through speakers as well as the USB ports on the back of my motherboard.

Need some help but I need to log off, any help is very much appreciated. Ideally would like to fix this without having to do a fresh reinstall.

[GreyGeek]

The latest driver for your NVidia GTX 1080 is the 470.103, which is a 32bit driver
https://www.nvidia.com/download/driv...s.aspx/186016/
The previous driver was the 390.1470 - Release Date: Thu Dec 16, 2021, which is also a 32bit driver.
The 510 driver supports your card
https://www.nvidia.com/Download/driv...x/186156/en-us
but I suspect that driver isn't supported by the 5.4 kernel. Your best option may be to purge the 510 driver and install the 470. OR, upgrade your kernel to a higher series if you can find one that works with your audio.
If the "ubuntu-drivers" command lists the 390 or the 470 as options use it to install one of them.

[Skava]

Thank you GreyGeek. I decided to to stick with still with the driver version 470 until I'm able to switch linux driver headers

Found a page on AskUbuntu that detailed how to install a specific driver version:
1. sudo apt remove '^nvidia'
2. sudo apt autoremove
3. Shut down my pc and only connected one of monitors (rebooting doesn't show any boot messages)
4. sudo apt install nvidia-driver-470
5. Shut down my pc and powered it on

It works after that, could even plug in my second monitor. I didn't try using ubuntu-drivers command as suggested (only caught glimpse of that comment), although doing that probably would've been a lot easier.

[GreyGeek]

Glad you got it working! And, thanks for tagging the subject line as "Solved". It will be helpful to folks in the future who may have similar problems.