O PackageKit Deamon travou

Não consigo atualizar no Kubuntu 18.10. Eu tenho 20 pacotes, ao atualizar a partir da GUI, recebo: O PackageKit Deamon travou

Do terminal: sudo apt-get update && sudo apt-get upgrade -y Eu recebo:

E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

Eu tentei isso sem sorte: https://itsfoss.com/could-not-get-lock-error/comment-page-5/

No dia seguinte eu recebo:

E: dpkg foi interrompido, você deve executar manualmente 'sudo dpkg --configure -a' para corrigir o problema.

Executando: sudo dpkg --configure -a

Setting up snapd (2.37.1+18.10) ...
snapd.failure.service is a disabled or a static unit, not starting it.
snapd.snap-repair.service is a disabled or a static unit, not starting it.

systemctl status snapd.service

● snapd.service - Snappy daemon
   Loaded: loaded (/lib/systemd/system/snapd.service; enabled; v
   Active: deactivating (stop-sigterm) (Result: timeout)
 Main PID: 22246 (snapd)
    Tasks: 12 (limit: 4915)
   Memory: 268.4M
   CGroup: /system.slice/snapd.service
           ├─22246 /usr/lib/snapd/snapd
           ├─22319 apparmor_parser --replace --write-cache -O no
           └─22320 apparmor_parser --replace --write-cache -O no

Feb 13 11:46:58 xxxx systemd[1]: Starting Snappy daemon...
Feb 13 11:46:58 xxxx snapd[22246]: AppArmor status: apparmor is 
Feb 13 11:46:59 xxxx snapd[22246]: helpers.go:145: error trying 
Feb 13 11:46:59 xxxx systemd[1]: snapd.service: Start operation 

jornalctl -xe

-- Subject: Unit snapd.service has finished shutting down
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
-- 
-- Unit snapd.service has finished shutting down.
Feb 13 11:47:47 xxxx systemd[1]: snapd.service: Found left-over 
Feb 13 11:47:47 xxxx systemd[1]: This usually indicates unclean 
Feb 13 11:47:47 xxxx systemd[1]: snapd.service: Found left-over 
Feb 13 11:47:47 xxxx systemd[1]: This usually indicates unclean 
Feb 13 11:47:47 xxxx systemd[1]: Starting Snappy daemon...

Não consigo correr: sudo dpkg --configure -a recebo:dpkg: error: dpkg frontend is locked by another process

lsof /var/lib/dpkg/lock 

tudo está morto.

Acredito que tenha que reinstalar uma nova fechadura, não sei como fazer isso?

sudo touch /var/lib/dpkg/lock

não está funcionando.