My distribution upgrade from ubuntu 18.04 to 20.04 stuck at unattended-upgrades for about 20 minutes. Is it normal? Do you have any suggestion, what should I do now? Do you have any suggestions?
I tried: sudo dpkg --configure -a; sudo apt dist-upgrade -f
and it returned:
dpkg: error: dpkg frontend lock is locked by another process
Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 8680 (focal)... 21s
