For the past few days all attempts to update 18.04.3LTS have failed. Livepatch is on, but has never indicated any available updates even when there are some found by clicking the Software Updater icon. Those won't update; I get an error msg (see screenshot below).
(screenshot)
The Package System is broken.
Check if you are using third party repositories. If so disable them, since they are a common source of problems.
Furthermore run the following command in a Terminal: apt-get install -f
Transaction failed: The package system is broken
The following packages have unmet dependencies:
nvidia-driver-435: Depends: libnvidia-gl-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: nvidia-dkms-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: nvidia-kernel-source-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: libnvidia-compute-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: nvidia-compute-utils-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: libnvidia-decode-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: libnvidia-encode-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: nvidia-utils-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: xserver-xorg-video-nvidia-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but it is not installed
Depends: libnvidia-cfg1-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: libnvidia-ifr1-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
Depends: libnvidia-fbc1-435 (= 435.21-1pop1~1567200870~18.04~c01044a~dev) but 435.21-1pop1~1567200870~18.04~c01044a~dev is installed
xserver-xorg-video-nvidia-418: Depends: xserver-xorg-video-nvidia-435 but it is not installed
xserver-xorg-video-nvidia-430: Depends: xserver-xorg-video-nvidia-435 but it is not installed
(end of screenshot)
I am not using third party repositories.
The suggested terminal command doesn't work (invalid command).
I've tried updating with Livepatch off, but it still fails.
Otherwise my system is operating as normal . . . well, almost . . . my mouse curser seems a little erratic but works.
I'm not that technically inclined, so any help would be appreciated. Thanks . . .