當我sudo do-release-upgrade更新到下一個 LTS 時，我得到
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.
原因似乎是這樣的（來自/var/log/dist-upgrade/main.log）：
WARNING Can't mark 'ubuntu-desktop' for upgrade (E:Unable to correct problems, you have held broken packages.)
ERROR Dist-upgrade failed: 'Broken packages after upgrade: ubuntu-desktop'
我該如何解決這個問題？/var/log/dist-upgrade/apt.log顯示太多損壞的包裹，我不知道如何繼續。我知道我不應該刪除ubuntu-desktop，我該怎麼辦？
注意，我做了sudo apt update和sudo apt upgrade。除了 之外，沒有任何報告損壞的軟體包do-release-upgrade。我認為當前版本中的軟體包沒有損壞，似乎升級會導致一些損壞的連結。