high,
I was on 16.04 LTS and just download the 18.0 LTS
I reboot and the result is Nothing! 16.04 again
Can you tell me what happened?
Thank you
Hi Patrick,
Welcome to our forums.
How did you performed the upgrade? There are many ways you can take - are you used one of the methods described in this guide?
Hi Sandman
Yes I did and executed the update, the removal etc. before to start the upgrade
Some commands to launche and no trouble untill the end.
Than I restarted and had the 16.04 again as if I did nothingâŠ
Tanks
Patrick
Thanks ! Not tanks as my corrector saysđ
Hey Patrick,
Did you use the graphical update manager or a command on the terminal? If the later, please execute it again and paste the output it provides here, so we can see where the problem may be. The last few lines from /var/log/apt/history.log could also show us some clues.
patrick@patrick-HP-Compaq-dc7800p-Small-Form-Factor:~$ sudo apt upgrade
Lecture des listes de paquets⊠Fait
Construction de lâarbre des dĂ©pendances
Lecture des informations dâĂ©tat⊠Fait
Calcul de la mise à jour⊠Fait
Certains paquets ne peuvent ĂȘtre installĂ©s. Ceci peut signifier
que vous avez demandĂ© lâimpossible, ou bien, si vous utilisez
la distribution unstable, que certains paquets nâont pas encore
Ă©tĂ© crĂ©Ă©s ou ne sont pas sortis dâIncoming.
Lâinformation suivante devrait vous aider Ă rĂ©soudre la situation :
Les paquets suivants contiennent des dépendances non satisfaites :
python3-aptdaemon.pkcompat : Est en conflit avec: packagekit
Est en conflit avec: packagekit:i386
E: Paquets défectueux
patrick@patrick-HP-Compaq-dc7800p-Small-Form-Factor:~$
it gives me a different answer now
Les paquets suivants contiennent des dépendances non satisfaites :
python3-aptdaemon.pkcompat : Est en conflit avec: packagekit
Est en conflit avec: packagekit:i386
E: Paquets défectueux
patrick@patrick-HP-Compaq-dc7800p-Small-Form-Factor:~$ sudo apt autoremove
Lecture des listes de paquets⊠Fait
Construction de lâarbre des dĂ©pendances
Lecture des informations dâĂ©tat⊠Fait
0 mis à jour, 0 nouvellement installés, 0 à enlever et 1780 non mis à jour.
patrick@patrick-HP-Compaq-dc7800p-Small-Form-Factor:~$
since I am a âBeginnerâ Iâm not allowed to copy a terminal screen on a post. It works with parts of it
I started again : sudo do-release-upgrade
Voulez-vous commencer la mise Ă niveau ?
20 paquets installés ne sont plus maintenus par Canonical. Vous
pouvez toujours obtenir une assistance de la part de la communauté.
60 paquets vont ĂȘtre supprimĂ©s. 456 nouveaux paquets vont ĂȘtre
installĂ©s. 1780 paquets vont ĂȘtre mis Ă jour.
Lâobtention et lâinstallation de la mise niveau peut prendre
plusieurs heures. Une fois le téléchargement terminé, ce processus ne
peut ĂȘtre annulĂ©.
_Continuer [oN] DĂ©tails [d]
and I say O
Hi Patrick,
Please provide the output of the following command on the terminal:
echo $LANG
With that I can set up a close to identical lab environment.
patrick@patrick-HP-Compaq-dc7800p-Small-Form-Factor:~$ echo $LANG
fr_FR.UTF-8
patrick@patrick-HP-Compaq-dc7800p-Small-Form-Factor:~$
Hey Patrick,
At the last question, you answered with lowercase âoâ and the do-release-upgrade exited without any further output?
Hi Sandman
I did click âdâ instead of âoâ and run into a dead-end. no way out so I closed the terminal and opened again and executed echo $LANG the way you told me
sorry 
Hey Patrick,
You have to press âoâ to start the upgrade, âdâ leads to the details of it. Let me know if running the do-release-upgrade again, and if everything seems okay starting it with âoâ provides any errors, or starts the upgrade process as it should.
At the gnome terminal you can always hit ctrl+shift+t to open another tab on it and thus another terminal session while leaving the original one intact if it may be needed later.
I do my best
Hi Sandman
there it goes again. the thing is running and doesnât seem to have any trouble
i opened a second terminal screen as you suggested
Hi Sandman
I am wheeping like a guitare
After the âoâ command the computer started again and did his thing.
Now I have the HPblue screen (normal) Than the red UBUNTU with the five white dots that turn red. The screen turns black ant this is it. No acces anymore. A manual restart gives the same result. 
Hi Patrick,
To quote a classic: donât panic, we are making progress. That is a huge step from ânothing happeningâ, at least from the upgrade perspective.
After the boot, the dots thing and the screen turning black, can you switch to another terminal by hitting something like ctrl+alt+F4? Getting a command line terminal asking for the login username would mean a success. That means only your X server has some sort of problem, but your system is running otherwise.
If that is so, please log in on the command line and check for the version with something like
cat /etc/os-release
In any case, please tell what happens on terminal switching.