Ubuntu gets stuck at this after upgrading to 18.04: TSC_DEADLINE
22286
[Firmware Bug]: TSC_DEADLINE disabled due to Errata - what should I do about this?
80794
Ubuntu 18.04 stuck at upgrading linux-header
2850
Ubuntu gets stuck in a login loop
93063
Ubuntu 18.04 hangs on booting with message "started user manager for uid 120" on Asus 1015PX
65808
17.10 to 18.04 upgrade freezes during boot
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
76248
"Failed to start session" after interrupted upgrade to 14.04
30068
Update: Failed to lock /var/cache/apt/archives/lock
2653
What should I do when Ubuntu freezes?
124152
Mercurial stuck "waiting for lock"
100135
What does "upgrade to 18.04" mean?
105451
apt update: Could not handshake: An unexpected TLS packet was received
8846
Gave up waiting for root device on Ubuntu
5820
How to fix the “Unable to calculate upgrade” issue from command line when upgrading from 12.04 to 14.04?
73973
After typing "apt-get update" terminal says Could not open lock file
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
7045
Why do I get "Required key not available" when install 3rd party kernel modules or after a kernel upgrade?