Cfrgtkky

Here are a couple of things to try.

Method One:

This is the easiest one to try. Instead of using sudo apt-get install PACKAGENAME, where PACKAGENAME is the package you’re trying to install with the apt system, use sudo apt-get install -f. The -f parameter will attempt to correct a system which has broken dependencies, after which you’ll be able to install the package in question.

Open a Terminal and type in:

sudo apt-get install -f

and press ENTER.

Now type in:

sudo dpkg --configure -a

and press ENTER.

Now one more time:

sudo apt-get install -f

Method Two:

Aptitude is an alternative of apt-get which you can use as a higher-level package manager. You can use it to try and install your package with it, instead of apt-get, but first you need to install aptitude.

Open a Terminal and type in:

sudo apt-get install aptitude

and press ENTER.

Now type in:

sudo aptitude install PACKAGENAME

and press ENTER.

PACKAGENAME is the package you’re installing. This will try to install the package via aptitude instead of apt-get, which should potentially fix the unmet dependencies issue.

IF THOSE DO NOT WORK

The broken package is mot likely locked and needs to be deleted. To delete the locked file, open a Terminal and type in:

sudo rm /var/lib/apt/lists/lock

and press ENTER.

The locked file may also need to be deleted in the cache directory. To do that, open a Terminal and type in:

sudo rm /var/cache/apt/archives/lock

I upgraded from 16.04 and was having a lot of different issues. I found it much easier to do a fresh install. A fresh or clean install is always the route to go in my opinion.

Hope this helps,

I want to add to this discussion by saying when using the Software Updater to do the upgrade to 18.04 and running into an issue the solution is to open the terminal and type:

sudo apt-get autoremove

followed by what initially caused things to go wrong here that lead to this discussion which as is follows:

sudo apt update

sudo apt upgrade

sudo apt dist-upgrade

sudo apt-get autoremove

sudo apt install update-manager-core

sudo do-release-upgrade -d

"If there's a way to enable scrolling up in xterm" since you can't scroll up you can send all output to a file by using:

sudo apt install -f > output.log

Then edit output.log and copy the messages to your question. Your chances of getting a good answer improve with more information.

As far as anyone else wanting to copy their data to a backup partition before upgrading to 18.04 here is the command borrowed from this answer: Bash script to clone Ubuntu to new partition for testing 18.04 LTS upgrade

rsync -haxAX --stats --delete --info=progress2 --info=name0 /* "$TargetMnt" 

      --exclude={/dev/*,/proc/*,/sys/*,/tmp/*,/run/*,/mnt/*,/media/*,/lost+found}

Before running the command you need to create a backup partition and mount it. After mounting it set:

TargetMnt=/mnt/my_backup_partition_name

Of course an easier method is just running the script linked above. It not only provides for interactive selection of the backup partition but provides validation and modifies grub so you can boot into the backup partition if need be.

PS I'm sad to hear about your problems and the many other problems I've read here in Ask Ubuntu since the release of 18.04. Unfortunately you see similar problems with each new release. Hopefully some day Conical stresses the importance of backing up and/or testing on a clone partition first before upgrading. Especially before the first point release of 18.04.1 which comes in July 26, 2018.

Indeed I had too many problems upgrading from Xubuntu 16.04 to 18.04. I had to completely remove gstreamer from the system (not working with pulseaudio, which behaves weirdly), apart of many other issues unrelated to this post (nvidia, netplan, baloo). In many years of managing desktops and servers it was my hardest migration. Therefore I don't advise ugrading to 18.04 before it is a stable distribution.

if you have system that you can't login then go to tty1 login by cltr + alt + F1 key login to your account and try this
sudo apt-get install -f dist-upgrade
if asks there for particular solution to apply Y/n use other option by typing "." for other solution then you are listed with other solution to fully upgrade your system. if any problem occurs let me know

After upgrade I had an issue with pyhon3.7 libs missing, whole apt/dpkg was blocked. Found missing /usr/lib/python3.7/py_compile.py one level deeper /usr/local/lib/python3.7. Solution which worked for me was backup (rename) whole /usr/lib/python3.7 and replace with sym-link.

Here is the problem (apt install -f). Sorry for czech lang, important stuff is in English

Načítají se seznamy balíků…

Vytváří se strom závislostí…

Načítají se stavové informace…

0 aktualizováno, 0 nově instalováno, 0 k odstranění a 7 neaktualizováno.

39 instalováno nebo odstraněno pouze částečně.

Po této operaci bude na disku použito dalších 0 B.

Nastavuje se balík python3-tk:amd64 (3.6.5-3) …

(null): can't open file '/usr/lib/python3.7/py_compile.py': [Errno 2] No such file or directory

dpkg: chyba při zpracovávání balíku python3-tk:amd64 (--configure):

 installed python3-tk:amd64 package post-installation script subprocess returned error exit status 2

Nastavuje se balík python3-lib2to3 (3.6.5-3) …

(null): can't open file '/usr/lib/python3.7/py_compile.py': [Errno 2] No such file or directory

dpkg: chyba při zpracovávání balíku python3-lib2to3 (--configure):

 installed python3-lib2to3 package post-installation script subprocess returned error exit status 2

dpkg: nesplněné závislosti zamezily konfiguraci balíku python3-distutils:

 python3-distutils závisí na python3-lib2to3 (>= 3.6.4); avšak:

  Balík python3-lib2to3 zatím není zkonfigurován.



...



dpkg: chyba při zpracovávání balíku libsdl-net1.2-dev:amd64 (--configure):

 problém se závislostmi - nechávám nezkonfigurované

dpkg: nesplněné závislosti zamezily konfiguraci balíku libsdl-image1.2-dev:amd64:

 libsdl-image1.2-dev:amd64 závisí na libsdl1.2-dev (>= 1.2.14~); avšak:

  Balík libsdl1.2-dev zatím není zkonfigurován.



dpkg: chyba při zpracovávání balíku libsdl-image1.2-dev:amd64 (--configure):

 problém se závislostmi - nechávám nezkonfigurované

dpkg: nesplněné závislosti zamezily konfiguraci balíku libboost-iostreams1.65-dev:amd64:

 libboost-iostreams1.65-dev:amd64 závisí na libboost-regex1.65-dev (= 1.65.1+dfsg-0ubuntu5); avšak:

  Balík libboost-regex1.65-dev:amd64 zatím není zkonfigurován.



dpkg: chyba při zpracovávání balíku libboost-iostreams1.65-dev:amd64 (--configure):

 problém se závislostmi - nechávám nezkonfigurované

dpkg: nesplněné závislosti zamezily konfiguraci balíku libboost-iostreams-dev:amd64:

 libboost-iostreams-dev:amd64 závisí na libboost-iostreams1.65-dev; avšak:

  Balík libboost-iostreams1.65-dev:amd64 zatím není zkonfigurován.



dpkg: chyba při zpracovávání balíku libboost-iostreams-dev:amd64 (--configure):

 problém se závislostmi - nechávám nezkonfigurované

dpkg: nesplněné závislosti zamezily konfiguraci balíku libboost-regex-dev:amd64:

 libboost-regex-dev:amd64 závisí na libboost-regex1.65-dev; avšak:

  Balík libboost-regex1.65-dev:amd64 zatím není zkonfigurován.



dpkg: chyba při zpracovávání balíku libboost-regex-dev:amd64 (--configure):

 problém se závislostmi - nechávám nezkonfigurované

Při zpracování nastaly chyby:

 python3-tk:amd64

 python3-lib2to3

 python3-distutils

 libglib2.0-dev-bin

 python3-dev

 libglib2.0-dev:amd64

 libgdk-pixbuf2.0-dev

 libibus-1.0-dev:amd64

 libboost-python1.65-dev

 libpango1.0-dev

 libsdl2-dev:amd64

 libharfbuzz-dev:amd64

 dh-python

 libsdl2-ttf-dev:amd64

 libboost-python-dev

 libsdl2-image-dev:amd64

 libpulse-dev:amd64

 libicu-le-hb-dev:amd64

 libcairo2-dev:amd64

 libnotify-dev:amd64

 libatk1.0-dev:amd64

 libgtk2.0-dev

 librsvg2-dev:amd64

 libicu-dev

 libass-dev:amd64

 libxml2-dev:amd64

 libsdl2-mixer-dev:amd64

 libsdl1.2-dev

 libsdl-ttf2.0-dev:amd64

 libboost-all-dev

 libboost-regex1.65-dev:amd64

 libbluray-dev:amd64

 libsdl-gfx1.2-dev:amd64

 libsdl-mixer1.2-dev:amd64

 libsdl-net1.2-dev:amd64

 libsdl-image1.2-dev:amd64

 libboost-iostreams1.65-dev:amd64

 libboost-iostreams-dev:amd64

 libboost-regex-dev:amd64