update-manager or APT should have indicator or low priority notification

[abdullahc]

I have used 14.04 and 1604, but raise this report because of the popularity of this issue to the new user.

http://askubuntu.com/questions/15433/unable-to-lock-the-administration-directory-var-lib-dpkg-is-another-process

see how many duplicate question are there.

- auto-update activated by default which don't show any notification or indicator while updating the package list equivalent to run `apt update`.

- security update downloaded/installed unintended

So it may take a while before it free the lock by itself. The top solution is to delete the lock. Which is not right as it may and corrupting DPKG files while running two operations simultanously.

The best solution i can think of is to let the user know about such background running operation:
- either by showing the indicator (which currently not visible while downloading lists)
- or sending a low priority notification message, about running update.

I like more indicator option, it seems more convenient to give user ability to stop it too.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: update-manager 1:0.196.14
ProcVersionSignature: Ubuntu 3.13.0-91.138-generic 3.13.11-ckt39
Uname: Linux 3.13.0-91-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
Aptdaemon:

Architecture: amd64
CurrentDesktop: KDE
Date: Wed Dec 14 10:49:33 2016
DpkgHistoryLog.txt:

DpkgTerminalLog.txt:

PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)