packages have unmet when try install apache2 server ?! + PreDepends: dpkg (>= 1.17.14

[momaiaz]

i try to install Apache server but :

------------------

sudo apt-get install apache2
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 apache2 : PreDepends: dpkg (>= 1.17.14)
E: Unable to correct problems, you have held broken packages.

[QIII]

Hello!

Which release of Ubuntu are you using?

When was the last time you did

sudo apt-get update
sudo apt-get upgrade

or

sudo apt-get update
sudo apt-get dist-upgrade

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[momaiaz]

Distributor ID:    Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:    14.04
Codename:    trusty

[momaiaz]

I did

sudo apt-get update
sudo apt-get dist-upgrade

still the same

[ian-weisser]

The following packages have unmet dependencies:
apache2 : PreDepends: dpkg (>= 1.17.14)

Let's see what rmadison says about dpkg in 14.04:

$ rmadison dpkg
 dpkg | 1.17.5ubuntu5     | trusty           | source, amd64, arm64, armhf, i386, powerpc, ppc64el
 dpkg | 1.17.5ubuntu5.4   | trusty-security  | source, amd64, arm64, armhf, i386, powerpc, ppc64el
 dpkg | 1.17.5ubuntu5.4   | trusty-updates   | source, amd64, arm64, armhf, i386, powerpc, ppc64el

There's your problem.
You seem to have tried to add non-Ubuntu software that demands a different (higher) version of dpkg than Ubuntu provides...but didn't provide the package itself...or the new package was not installable. That's called a version conflict and it falls under "you have requested an impossible situation" in the error message.

This is the risk you take when adding non-Ubuntu software.
Happily, fixing the problem is not difficult.

My recommended solution is to remove the offending non-Ubuntu source, uninstall all software from that source, purge the packages in your cache from that source, rebuild your dpkg database without that source, and try to get back to a functioning package manager.

You will not be able to install or remove any packages, including security updates, until you repair your system.

It's not difficult to do, and it's a good learning experience.

[momaiaz]

Let's see what rmadison says about dpkg in 14.04:

$ rmadison dpkg
 dpkg | 1.17.5ubuntu5     | trusty           | source, amd64, arm64, armhf, i386, powerpc, ppc64el
 dpkg | 1.17.5ubuntu5.4   | trusty-security  | source, amd64, arm64, armhf, i386, powerpc, ppc64el
 dpkg | 1.17.5ubuntu5.4   | trusty-updates   | source, amd64, arm64, armhf, i386, powerpc, ppc64el

There's your problem.
You seem to have tried to add non-Ubuntu software that demands a different (higher) version of dpkg than Ubuntu provides...but didn't provide the package itself...or the new package was not installable. That's called a version conflict and it falls under "you have requested an impossible situation" in the error message.

This is the risk you take when adding non-Ubuntu software.
Happily, fixing the problem is not difficult.

My recommended solution is to remove the offending non-Ubuntu source, uninstall all software from that source, purge the packages in your cache from that source, rebuild your dpkg database without that source, and try to get back to a functioning package manager.

You will not be able to install or remove any packages, including security updates, until you repair your system.

It's not difficult to do, and it's a good learning experience.

Yes ,, i added some external resources ...

Her what i did to fix it ,, i remove all external resources and clean packages and cache ,,
that not help << but i added kali sana resources of packages not security
then update and install apache2 and it works fine

[ian-weisser]

Her what i did to fix it ,, i remove all external resources and clean packages and cache ,,
that not help << but i added kali sana resources of packages not security
then update and install apache2 and it works fine

I am happy you seems to be satisfied with the solution you found.
Adding *more* non-Ubuntu software is usually not a recommended solution. It usually means your system is fragile, vulnerable to breakage from untested updates.
Do keep regular backups of your server's data.

[momaiaz]

I am happy you seems to be satisfied with the solution you found.
Adding *more* non-Ubuntu software is usually not a recommended solution. It usually means your system is fragile, vulnerable to breakage from untested updates.
Do keep regular backups of your server's data.

aha ,, do you have better solution ?? .. Please tell my in simple way ,, Thx

[ian-weisser]

aha ,, do you have better solution ?? .. Please tell my in simple way ,, Thx

See post #5.

[momaiaz]

See post #5.

Thank you ,,,