Ubuntu 20.04升级至22.04进程停滞求助

Hey Alan, sorry to hear your upgrade got stuck mid-process—let’s get this sorted out for you. Since your graphical interface is unresponsive but the mouse still moves, here’s a step-by-step approach to fix this:

• Switch to a virtual terminal
  Your GUI might be frozen, but the underlying system is likely still running. Press Ctrl+Alt+F3 (you can try F2-F6 if F3 doesn’t work) to open a text-based login screen. Enter your username and password to log in.

• Check if upgrade processes are still active
  Run this command to see if any apt/dpkg-related processes are still running:

  ps aux | grep -E "apt|dpkg"
  

  If you see active processes related to the upgrade, you could wait a bit longer (though you’ve already waited a while). If they look stuck or unresponsive, proceed to the next step.

• Fix the stuck package configuration
  First, safely terminate any hanging apt processes:

  sudo killall apt apt-get
  

  Then, let dpkg repair the interrupted configuration and finish any pending tasks (including removing that obsolete network-manager conffile):

  sudo dpkg --configure -a
  

  This command will pick up where the upgrade left off and resolve any blocked steps.

• Complete the upgrade
  Once dpkg --configure -a finishes without errors, run these commands to ensure all packages are fully upgraded:

  sudo apt update
  sudo apt upgrade -y
  sudo apt dist-upgrade -y
  

• Reboot and verify
  Finally, reboot your system to apply all changes:

  sudo reboot
  

  After restarting, check your Ubuntu version to confirm the upgrade worked:

  lsb_release -a
  

  You should see "Ubuntu 22.04 LTS" listed.

A quick note: If switching to the virtual terminal doesn’t work and you have to do a hard reboot (hold the power button), don’t panic—just run sudo dpkg --configure -a immediately after logging back in to fix any broken package states from the interrupted upgrade.

备注：内容来源于stack exchange，提问作者Alan_K