I tried to update QGIS 3.10 to a newer version on Ubuntu 18.04 (bionic) but it fails every time due to brocken packages probably. I've already followed instructions on https://qgis.org/it/site/forusers/alldownloads.html#debian-ubuntu and https://linuxhint.com/install-qgis3-geospatial-ubuntu/ but it didnt help me.
I have modified the sources.list (sudo nano /etc/apt/sources.list ) several times with all possible repositories but nothing helped and now I'm totally lost.
After changing the sources.list I updated (sudo apt update) and tried to install QGIS (sudo apt install qgis qgis-plugin-grass ) but everytime I get this information:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies.
qgis : Depends: libgdal20 (>= 1.8.0) but it is not going to be installed
Depends: libqgis-3d3.16.3 but it is not going to be installed
Depends: libqgis-analysis3.16.3 but it is not going to be installed
Depends: libqgis-app3.16.3 but it is not going to be installed
Depends: libqgis-core3.16.3 but it is not going to be installed
Depends: libqgis-gui3.16.3 but it is not going to be installed
Depends: python3-qgis (= 1:3.16.3+28bionic) but it is not going to be installed
Depends: qgis-providers (= 1:3.16.3+28bionic) but it is not going to be installed
Depends: qgis-common (= 1:3.16.3+28bionic) but 3.10.12+dfsg-1~bionic1 is to be installed
qgis-plugin-grass : Depends: qgis-provider-grass (= 1:3.16.3+28bionic) but 3.10.12+dfsg-1~bionic1 is to be installed
Depends: grass740 but it is not installable
Depends: libgdal20 (>= 1.8.0) but it is not going to be installed
Depends: libqgis-app3.16.3 but it is not going to be installed
Depends: libqgis-core3.16.3 but it is not going to be installed
Depends: libqgis-gui3.16.3 but it is not going to be installed
Depends: libqgisgrass7-3.16.3 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
And my sources.list looks like this:
GNU nano 2.9.3 /etc/apt/sources.list
deb https://qgis.org/debian bionic main
# deb http://qgis.org/ubuntu bionic main
# deb cdrom:[Ubuntu 18.04 _Bionic_ - Build amd64 LIVE Binary 20180608-09:38]/ bionic main
# deb http://qgis.org/ubuntu-ltr/ bionic main
# deb-src http://qgis.org/ubuntu-ltr/ bionic main
# deb http://archive.ubuntu.com/ubuntu bionic multiverse restricted universe main
# deb-src http://archive.ubuntu.com/ubuntu bionic multiverse restricted universe main #Added by software-properties
# deb-src https://qgis.org/ubuntu bionic main
# deb http://ppa.launchpad.net/ubuntugis/ppa/ubuntu bionic main
# deb-src http://ppa.launchpad.net/ubuntugis/ppa/ubuntu bionic main
# deb http://qgis.org/debian bionic main
deb-src http://qgis.org/debian bionic main
# deb https://qgis.org/debian bionic main
#deb https://qgis.org/ubuntu bionic main
# deb https://qgis.org/ubuntugis bionic main
# deb-src https://qgis.org/ubuntugisbionic main
#deb http://de.archive.ubuntu.com/ubuntu bionic main restricted
# deb-src http://de.archive.ubuntu.com/ubuntu bionic main restricted universe multiverse
#deb http://de.archive.ubuntu.com/ubuntu bionic-updates main restricted
# deb-src http://de.archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse
#deb http://de.archive.ubuntu.com/ubuntu bionic universe
#deb http://de.archive.ubuntu.com/ubuntu bionic-updates universe
# deb-src http://de.archive.ubuntu.com/ubuntu bionic-security main restricted universe multiverse
# deb http://de.archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
# deb-src http://de.archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
# deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner
# deb https://qgis.org/ubuntu main
# deb-src https://qgis.org/ubuntu main
Can anyone tell me where the problem is?