Не съм специалист по Ubuntu (не бих си го причинил никога), но бих започнал с връщане на оригиналните хранилища и премахването на PPA или поне проверката дали нещо не е променено.
add-apt-repository --list
# Written by ubuntu-pro-client
Types: deb
URIs: https://esm.ubuntu.com/apps/ubuntu
Suites: noble-apps-security noble-apps-updates
Components: main
Signed-By: /usr/share/keyrings/ubuntu-pro-esm-apps.gpg
# Automatically generated by Calamares on 2024-12-06.
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of Kubuntu.
## Ubuntu distribution repository
##
## The following settings can be adjusted to configure which packages to use from Ubuntu.
## Mirror your choices (except for URIs and Suites) in the security section below to
## ensure timely security updates.
##
## Types: Append deb-src to enable the fetching of source package.
## URIs: A URL to the repository (you may add multiple URLs)
## Suites: The following additional suites can be configured
## <name>-updates - Major bug fix updates produced after the final release of the
## distribution.
## <name>-backports - software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
## Components: Aside from main, the following components can be added to the list
## restricted - Software that may not be under a free license, or protected by patents.
## universe - Community maintained packages.
## Software from this repository is only maintained and supported by Canonical
## for machines with Ubuntu Pro subscriptions. Without Ubuntu Pro, the Ubuntu
## community provides best-effort security maintenance.
## multiverse - Community maintained of restricted. Software from this repository is
## ENTIRELY UNSUPPORTED by the Ubuntu team, and may not be under a free
## licence. Please satisfy yourself as to your rights to use the software.
## Also, please note that software in multiverse WILL NOT receive any
## review or updates from the Ubuntu security team.
##
## See the sources.list(5) manual page for further settings.
Types: deb
URIs: http://de.archive.ubuntu.com/ubuntu
Suites: noble noble-updates noble-backports
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
## Ubuntu security updates. Aside from URIs and Suites,
## this should mirror your choices in the previous section.
Types: deb
URIs: http://security.ubuntu.com/ubuntu/
Suites: noble-security
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
# Written by ubuntu-pro-client
Types: deb
URIs: https://esm.ubuntu.com/infra/ubuntu
Suites: noble-infra-security noble-infra-updates
Components: main
Signed-By: /usr/share/keyrings/ubuntu-pro-esm-infra.gpg
Types: deb
URIs: https://ppa.launchpadcontent.net/flatpak/stable/ubuntu/
Suites: noble
Components: main
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Types: deb
URIs: https://ppa.launchpadcontent.net/tomtomtom/woeusb/ubuntu/
Suites: noble
Components: main
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