I've already added Ubuntu university repo:
> > deb http://archive.ubuntu.com/ubuntu questing multiverse universe main restricted
> # deb-src http://archive.ubuntu.com/ubuntu questing multiverse universe main restricted
> # Enabling this repository requires acceptance of the following license:
> # /usr/share/amdgpu-install/AMDGPUPROEULA
> # deb https://repo.radeon.com/amdgpu/7.1.1/ubuntu noble proprietary deb [arch=amd64,i386 signed-by=/etc/apt/keyrings/rocm.gpg]
> https://repo.radeon.com/amdgpu/30.20.1/ubuntu noble main
> #deb-src [signed-by=/etc/apt/keyrings/rocm.gpg] https://repo.radeon.com/amdgpu/30.20.1/ubuntu noble main Types: deb
> URIs: https://download.docker.com/linux/ubuntu Suites: questing
> Components: stable Signed-By: /etc/apt/keyrings/docker.asc deb
> [arch=amd64 signed-by=/usr/share/keyrings/nodesource.gpg]
> https://deb.nodesource.com/node_21.x nodistro main deb [arch=amd64
> signed-by=/etc/apt/keyrings/rocm.gpg]
> https://repo.radeon.com/rocm/apt/7.1.1 noble main deb [arch=amd64,i386
> signed-by=/etc/apt/keyrings/rocm.gpg]
> https://repo.radeon.com/graphics/7.1.1/ubuntu noble main Types: deb
> URIs: http://ru.archive.ubuntu.com/ubuntu/ Suites: questing
> questing-updates questing-backports Components: main restricted
> universe multiverse Signed-By:
> /usr/share/keyrings/ubuntu-archive-keyring.gpg
>
> Types: deb URIs: http://security.ubuntu.com/ubuntu/ Suites:
> questing-security Components: main restricted universe multiverse
> Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
> # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
> # newer versions of the distribution.
>
> ## 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 in this repository receives maintenance
> ## from volunteers in the Ubuntu community, or a 10 year security maintenance
> ## commitment from Canonical when an Ubuntu Pro subscription is attached.
> ## 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://archive.ubuntu.com/ubuntu/ Suites: questing
> questing-updates questing-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: questing-security
> Components: main universe restricted multiverse Signed-By:
> /usr/share/keyrings/ubuntu-archive-keyring.gpg Types: deb URIs:
> https://ppa.launchpadcontent.net/wireshark-dev/stable/ubuntu/ Suites:
> questing Components: main Signed-By: -----BEGIN PGP PUBLIC KEY
> BLOCK----- .
> mQINBFSLYMIBEAC40a/fcfUK5r7VDT8v/mLuYANqcD5EcLCy9yYhMssFJJIlV+b1
> 0aYeQPKO0AoTw7+zh3l2XA1YVfNI/VGs9MPeREkcO8isW33E6IR6X6sZERwU9BXv
> Ya/pUeRrcevSiaDmj7WK+BvUagAtl61pq1AuaxW3iVLYUcSpTzi3Fn3R7HokpS0W
> wAkx88X7TGbIQOOvKIDgu+XkllbBXz9myukGSzunhXPC74muQB8FqRDr/Nt3sUqO
> pjzViuUU9kEmXgZ/ba4uzbeMFrI6NU3ACMaijgJQm781VMhVpPHjqT822/7LEkNq
> Gw2O3uK42PoEyFIzrM47u75P7ZTIfjQheuk+Q4p5oheZz6SLJsOEG7hqrx8EAIF1
> sY+LuPAJ/DkB5xAzRM63VnFeOAuiqHKwwhRt5FEy8b9mHl37taiJHDfzaiIH0mmm
> ZAHCeTAfh1BJDB0CB6aCbBG7mX0F7nhxI66FpvzksjwkBAt0XXey8WFUc9UI0Dnt
> TRICpDo9yZO5lzeh8lUfRTirOFwnedDRKAw/1ZVwl5VuNXHX/MPYgPQDeafSvKM0
> yTCV3za6ugbYwH6w694w2BWx1p0ijRV30guJqWD4+43YlWqAZHln8SxDKGlMUwBT
> Rk1CFICysFhG7fgWpeWlmamv0NagQMJbFenmWLyNY+8sKw1uzn+/AJgKlwARAQAB
> tCZMYXVuY2hwYWQgUFBBIGZvciBXaXJlc2hhcmsgRGV2ZWxvcGVyc4kCOAQTAQIA
> Types: deb URIs: https://repo.yandex.ru/yandex-browser/deb/ Suites:
> stable Components: main Signed-By:
> /etc/apt/trusted.gpg.d/yandex-browser.gpgTypes: deb URIs:
> https://repo.yandex.ru/yandex-browser/deb/ Suites: stable Components:
> main Signed-By: /etc/apt/trusted.gpg.d/yandex-browser.gpg
I've run install python3-venv, but got an error that it couldn't locate the package:
sudo apt install python3-venv
I've also tried these steps, but had the same issue:
The issue persists even after adding the universe repository.
It works fine on earlier versions of Ubuntu.
sudo apt update; sudo add-apt-repository universe; sudo apt update; sudo apt install python3-venvpython3-venv | 3.13.7-1 | questing/universe | amd64, amd64v3, arm64, armhf, i386, ppc64el, riscv64, s390xapt info python3-venvI see:Section: universe/python, so it has to be in universe. The command I provided enables the universe repository. Likely you disabled it or have a minimal/server install.