Failed to start VTE child process "X" launched by x-terminal-emulator process "Y"

[ivanleoncz]

Hi there.

I have Qt Creator 10.0.1 on a Ubuntu 20.04.6 (gcc 9.4.0), and any code that I try to compile and execute, it is not being displayed on a terminal, even though I configured the project to do so:

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This is the kind of message being recorded at /var/log/syslog/:

Jun  4 20:58:44 my-notebook systemd[2006]: vte-spawn-3c853fdf-e79c-48ea-b4b5-e6081e9402b7.scope: Failed to add PIDs to scope's control group: No such process
Jun  4 20:58:44 my-notebook systemd[2006]: vte-spawn-3c853fdf-e79c-48ea-b4b5-e6081e9402b7.scope: Failed with result 'resources'.
Jun  4 20:58:44 my-notebook systemd[2006]: Failed to start VTE child process 2496874 launched by x-terminal-emulator process 1469094.

And QT creator gets freeze for almost a minute and then responds to normal interactions.

Has anyone reported a similar error before? I don't find anything related here on the forum.

Any help is much appreciated.

Regards,

[ChrisW67]

@ivanleoncz How are you providing credentials to allow Creator to launch the process as root? Is it timing out waiting for you?

[JonB]

@ivanleoncz As @ChrisW67 asks. Have you tried unchecking Run as root user?

[ivanleoncz]

Thank you for your comments.

In fact, I tried to compile and run the program, with and without root permissions checked, and it worked.

And I just detected the issue: if there's a terminal window already open on the OS, then Creator cannot open another window to run the program.

If I close all terminal windows and run again the program, Creator creates a terminal window to display the program interface.

Since the errors reported on syslog are about libvte-2.91.0, I assume that there might be some conflict between Creator and this library, in order to create terminal windows for running programs:

$ sudo dpkg -l | grep libvte
ii  libvte-2.91-0:amd64                                         0.60.3-0ubuntu1~20.04                                          amd64        Terminal emulator widget for GTK+ 3.0 - runtime files
ii  libvte-2.91-common                                          0.60.3-0ubuntu1~20.04                                          amd64        Terminal emulator widget for GTK+ 3.0 - common files

I have the native Gnome Terminal on my Ubuntu, but my default terminal is Terminator (v1.91). I wonder if there's a way of configuring QtCreator to use a different terminal instead of the default one: that might be the workaround for this case.

I'll do my own investigation here, but if you guys have any idea on how to do that, I'd really appreciate it.

[ivanleoncz]

Awesome. I found it (pretty easy):

• Edit > Preferences > Environment > then setting the path to Gnome Terminal

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Easy to find the path of the binary as well (if anyone wonders how to do it):

$ whereis gnome-terminal
gnome-terminal: /usr/bin/gnome-terminal.wrapper /usr/bin/gnome-terminal /usr/bin/gnome-terminal.real /usr/share/man/man1/gnome-terminal.1.gz

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And Gnome Terminal displays the program in parallel with another terminal software:

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I think everything is fine here. Thank you for your willingness to help, people.