Yritin ajaa updaten komennolla
sudo apt-get update
Sain vastauksen
Luetaan pakettiluetteloita... Valmis
E: Could not get lock /var/lib/apt/lists/lock. It is held by process 1021 (packagekitd)
N: Be aware that removing the lock file is not a solution and may break your system.
E: Unable to lock directory /var/lib/apt/lists/
Mitä tässä voisi tehdä?