Acabo de hacer apt update + apt dist-upgrade. En history.log ha instalado estos paquetes:
Install: debconf-kde-data:amd64 (1.1.0-1build3, automatic), debconf-kde-helper:amd64 (1.1.0-1build3, automatic), libdebconf-kde1:amd64 (1.1.0-1build3, automatic)
Upgrade: libqt6sql6-sqlite:amd64 (6.8.0-0zneon+24.04+noble+release+build17, 6.8.1-0zneon+24.04+noble+release+build20), kde-config-updates:amd64 (6.2.4-0zneon+24.04+noble+release+build10, 6.2.4-0zneon+24.04+noble+release+build11), qt6-base:amd64 (6.8.0-0zneon+24.04+noble+release+build17, 6.8.1-0zneon+24.04+noble+release+build20), qt6-gtk-platformtheme:amd64 (6.8.0-0zneon+24.04+noble+release+build17, 6.8.1-0zneon+24.04+noble+release+build20), alsa-ucm-conf:amd64 (1.2.10-1ubuntu5.2, 1.2.10-1ubuntu5.3), libqt6core6t64:amd64 (6.8.0-0zneon+24.04+noble+release+build17, 6.8.1-0zneon+24.04+noble+release+build20), plasma-discover-common:amd64 (6.2.4-0zneon+24.04+noble+release+build10, 6.2.4-0zneon+24.04+noble+release+build11), plasma-discover-backend-snap:amd64 (6.2.4-0zneon+24.04+noble+release+build10, 6.2.4-0zneon+24.04+noble+release+build11), plasma-discover:amd64 (6.2.4-0zneon+24.04+noble+release+build10, 6.2.4-0zneon+24.04+noble+release+build11), qt6-qpa-plugins:amd64 (6.8.0-0zneon+24.04+noble+release+build17, 6.8.1-0zneon+24.04+noble+release+build20), libpq5:amd64 (16.4-0ubuntu0.24.04.2, 16.6-0ubuntu0.24.04.1), plasma-discover-backend-flatpak:amd64 (6.2.4-0zneon+24.04+noble+release+build10, 6.2.4-0zneon+24.04+noble+release+build11), kf6-kirigami-addons:amd64 (1:1.5.0-0zneon+24.04+noble+release+build7, 1:1.6.0-0zneon+24.04+noble+release+build8), libqt6gui6t64:amd64 (6.8.0-0zneon+24.04+noble+release+build17, 6.8.1-0zneon+24.04+noble+release+build20)
End-Date: 2024-12-04 00:34:33
Al reiniciar, no arrancaba el entorno gráfico. El servicio sddm no iniciaba con un error que decía algo como:
/usr/sbin/sddm: symbol lookup error: /lib/x86_64-linux-gnu/libQt6Qml.so.6: undefined symbol: (muchas letras y números)
He buscado con dpkg -S los ficheros /lib/x86_64-linux-gnu/libQt6Qml.so.6 o /lib/x86_64-linux-gnu/libQt6Qml.so.6.8.0 y no me ha sabido decir que paquete lo proporciona, así que he tenido que hacer downgrade de todos esos paquetes para poder recuperar el sistema.
¿Estas inestabilidades son habituales? Porque necesito usar el portátil para cosas útiles, no para estar haciendo gimkanas para recuperar el equipo en cada apt update...