Flameshot: Flameshot v0.6.0 does not open in Fedora: "QSocketNotifier: Can only be used with threads started with QThread"

[renaldofreire]

Flameshot version
v0.6.0

Describe the bug
Flameshot application does not open. The error message appears: $ flameshot
“QSocketNotifier: Can only be used with threads started with QThread”.

To Reproduce
Start Flameshot directly or in bash

Expected behavior
Flameshot should work normally.

System Information
Fedora 31 (Workstation Edition).

[quasipedia]

I can confirm this bug apply also to Fedora 32 (64bit) beta. The package itself seems not to install the recommended runtime dependencies (qt5-qtbase qt5-qtsvg-devel), but even after installing them manually, flameshot does not run. It just a further line to the error message:

QSocketNotifier: Can only be used with threads started with QThread
QObject::connect: No such signal QPlatformNativeInterface::systemTrayWindowChanged(QScreen*)

[p-gonzo]

Have you tried running flameshot gui ?

I had the same output on fedora31, but with the extra gui arg, the app launches as expected.

If you're in GNOME, you can also bind flameshot gui to a hotkey.

[quasipedia]

Boom! That fixed it. It should be fixed, and it should be trivial to do so, in the package though. :)

[quasipedia]

Also I live this here as a temporary fix for others. You can get it to work from the gnome shell (as in super key → type flame.. → press Enter) by manually editing the .desktop file.

sudo vim /usr/share/applications/flameshot.desktop

Then search for the line:

Exec=flameshot

and modify it into:

Exec=flameshot gui

[borgmanJeremy]

I am going to close this as it is related to v0.6 If you experience this issue on a newer version feel free to reach out.

[quasipedia]

Still not working on 0.8.3 (Fedora v.32)
[ I even tried to uninstall-reinstall for the sake of it ]

[quasipedia]

@borgmanJeremy - Not sure if you noticed the above, so I'm pinging just in case... :)

[borgmanJeremy]

I run this on Fedora32 and Fedora33 with no issues or changes (fractional scaling aside).

Are you sure when you run flameshot the program is not starting? Do you have a gnome sys-tray extension to show the icon?