[Post-Install] Upgrade having issue with wvdial

[confusedcatgirl]

Hello Together,
first post, so I might make some mistakes.

I have a laptop with Kubuntu. It's pretty much a stock Dell Latitude 5424 Rugged (Not the Extreme version), but with a second battery and different SSD.
This machine never had issues. It runs extremely well, even for a machine that is now turning 6 this year.
However, wvdial, never installs, thus preventing the Upgrade from finishing up completely. I have the new kernel, and everything else is upgraded too. However, wvdial is causing issues, also blocking the desktop from upgrading.
During the installation, it will just hang on "Configuring wvdial". I tried both with "apt" and as a deb directly from the ubuntu packages page, both have the exact same issues. I am stuck permanently, and I have waited for around half an hour on the first attempt.
It becomes really infurating and I don't wanna leave it hanging open.

[Snowhog]

Upgrades to Kubuntu 26.04 can hang when configuring wvdial due to dependency conflicts. This typically leaves the package manager broken and may cause kernel panics on reboot. To resolve an interrupted or hung upgrade, switch to a TTY (Ctrl + Alt + F3) and run sudo apt --fix-broken install. [1, 2, 3, 4]
For tips on how to properly handle interrupted package managers and repair your dependencies during release upgrades:
18:20
Fixing upgrade problems Ubuntu - Oh no! Something has gone wrong.

YouTube • Penguin Tutor
Known Issues & Troubleshooting

• The wvdial / wvstreams Conflict: wvdial relies on the wvstreams library, which saw changes and deprecations in the 26.04 package repositories.
  • Fix: If you are not actively using dial-up modems, you may want to remove wvdial prior to upgrading (sudo apt remove wvdial).
  • If the upgrade has already hung, terminate the process or reboot into recovery mode and run sudo dpkg --configure -a or sudo apt --fix-broken install to bypass or fix the wvdial configuration.
• General Release Bugs: Because Kubuntu 26.04 utilizes heavily updated core tools and the KDE Plasma 6.6 desktop, upgrading users have reported several post-upgrade quirks:
  • System Settings not Saving: Users report certain settings failing to persist after reboots.
  • Missing Modules: Some core system symlinks can become misaligned during version jumps.
• Workarounds: Always run sudo apt update && sudo apt upgrade before attempting a major distribution upgrade, as resolving pending packages clears the path for smoother dependency resolution. If upgrading in-place is failing repeatedly, consider backing up your /home directory and performing a clean installation with the 26.04 ISO. [1, 2, 3, 4, 5, 6, 7, 8]

Before proceeding with fixes, it is highly recommended to check community forums for the latest discussions on these issues. You can review ongoing troubleshooting threads on the Ask Ubuntu or discuss solutions on the Ubuntu Community Hub.