Ever since Canonical is pushing for a Flutter based installer since 23.04 (With legacy installer still Included) and 24.04 (Which a legacy installer is no longer included), I like a flutter, I loved it, it’s an installation process on some devices (Mostly a handhelds) has errors and cannot get Ubuntu to work properly (USB ports on certain handhelds has limited power and Flutter based installer probably did not include something like on a legacy installer such as an A-Sync).
As one person said in this topic cannot boot to Ubuntu after installing it. For this one, I couldn’t install Ubuntu 24.04 or later.
It looks like this during a process of the installation while I’ve waited and waited.
Do not know if that would solve problem, but have had Ubuntu not install on older low spec laptop system, possibly similar to a low spec hand held. Just would not install. Where Kubuntu would install.
Issue was not installer per se, but that system did not have new enough specs to support full Ubuntu which assumes newer system.
Have you tried a lighter weight flavor? https://ubuntu.com/download/flavours
Light weight flavors:
Lubuntu, Xubuntu, Ubuntu MATE, Budgie
Flavors of Ubuntu only come with three years of supported life (five years applies to Ubuntu Desktop, Ubuntu Server but not flavors)