I just installed Ubuntu 18 on my desktop PC alongside Windows 10 and have been using Ubuntu without any problems for a couple of days. Today, when I booted up my computer, I am no longer able to open the terminal at all. I've tried restarting it multiple times, but it still won't work. If I click the terminal icon on my task bar, nothing happens. If I try opening the terminal with CTRL+ALT+t, it still doesn't work.
How can I resolve this?
I had the same problem. After updating Python to version 3.7, some applications like Jupyter Notebook, Meld and the terminal, did not launch.
The problem was that the symbolic link to python3.4 was lost. Reinstalling python3-minimal solved it:
sudo apt-get --reinstall install python3-minimal
The same problem happened with me. The reason is that the python version is 3.7. You can download and say any terminal for solution. I used the terminal of visual code.
The code you need to enter is:
sudo update-alternatives --config python3
Then you should choose a version lower than python 3.7. I choose python3.6. So I write 1 and confirm.
If the problem persists, you can rewrite it.
Example:
Did you update your python3?
If yes, then this will be the solution:
Type this command:
sudo update-alternatives --config python3
As suggested in other answers and comments, you can try other terminals than the default gnome-terminal, e.g. terminator (I prefer this over the default terminal for other reasons anyway) or the one included in Visual Studio Code.
To install,
sudo apt install terminatorterminator and enjoysudo apt update-alternatives --config x-terminal-emulator)I also second Allen's answer but you don't really need xterm. Just right-click on a point in desktop and choose "open terminal". It works that way. Then type
sudo update-alternatives --config python3
and choose a lower Python version as mentioned before.
What worked for me is following command:
cd /usr/bin
sudo cp gnome-terminal gnome-terminal-backup
sudo cp gnome-terminal.real gnome-terminal
Explanation: First line is for backup.
Is taken from: https://www.youtube.com/watch?v=fRwbpBol4Aw
As the terminal does not work, you can use terminal in Intellij IDEA/VS Code/open another console by Ctrl+Alt+F3, and:
First, try:
sudo update-alternatives --config python3
If you cannot --config("No alternatives for python3"), you need to install a new alternative. For example:
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.8 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 2
And after all, do --config to revert the version(choose 3.6), as some system component relies on the libs in 3.6, and I guess that for the new 3.8, they are not installed, and a bunch of things will stop working!
If you want to update python then , first install tilix because terminal will not work after updating python but tilix will work.You can perform any task in tilix like terminal.
For my case, the sudo update-alternatives --config python3 didn't solve. I had to undo symbolic links in /usr/bin like this:
from
sanata@sanata-desktop:/usr/bin$ ls -ght python*
lrwxrwxrwx 1 root 9 Aug 11 14:52 python3 -> python3.8
lrwxrwxrwx 1 root 9 Aug 11 14:52 python -> python3.8
to
sanata@sanata-desktop:/usr/bin$ ls -ght python*
lrwxrwxrwx 1 root 9 Aug 11 14:52 python3 -> python3.6
lrwxrwxrwx 1 root 9 Aug 11 14:52 python -> python3.6
Python 3.6 was before I had modified.
Additionally in some computer, the alias in ~\.bashrc method works. ref
Runtime environment:
OS Ubuntu 18.04 AArch64
You can use ctrl+alt+F1 up to F6 to open multiple terminals in text mode. If you want to return to GUI press ctrl+alt+F7.
