I have used LM since version 4 Daryna I believe it was, maybe 3 Celena, and have preferred LM since.
My current rig: MB: Asus PRIME Z370-A; CPU: Intel® Core™ i7-8700K CPU @ 3.70GHz × 12; GPU: GeForce GTX 1080 Ti/PCIe/SSE2; RAM: 32 GiB; NMVe: Samsung SSD 970 EVO Plus 500GB. I live in Japan and have a fast internet connection.
I recently made a fresh install of LM20 64 Cinnamon and liked it a lot. Nevertheless, upgrade has often been an issue and also here did not finalize and so I repeated and then waited a couple of days and tried again – no dice. Headers and various other items refused to upgrade including the NVIDIA driver which required a dependency that also would not install.
This situation I have also experienced with LMDE4 which would also not upgrade much to my chagrin as I loved that distro – low maintenance!
I recently installed Ubuntu 20.04 – shame on me. But update/upgrade finalized incl. the NVIDIA driver 440 during installation. Then I tried to download the Cinnamon desktop – again some parts would not upgrade, so no Cinnamon!
I have experienced this situation with LM update/upgrade difficulties for a number of versions, not just the latest one. Sometimes I can get the distro to update satisfactorily but upgrade mostly not.
I know a detailed report of what does not upgrade is preferable, but these problems have a longish history & are still present. I therefore simply must assume, as updates seem fine but the error messages for upgrades in the majority of cases refer to time outs, that the servers are either overloaded or simply too slow. Hopefully it’s that simple!
I have tried the default and also a number of local servers with no improvement and yes, I have tried sudo apt-get update -o Acquire::http::No-Cache=True
Maybe I’m continuously doing something wrong so any further suggestions to fix this situation would be more than welcome. I just hope the current virus hasn’t created a Linux Mint/Ubuntu handshake problem through distancing!