Some applications taking 20+ seconds to load on Mint 20.3 *solved*

[another person]

Hi, I just reinstalled Linux Mint the newest Cinnamon on my machine, Mint 20.3, everything is working smooth and just beat a game on the Dolphin emulator with minimal lag at 60 fps.
I have one concern, its that certain apps will take up to 20 or 30 seconds to load after clicking on them. What perplexes me is other apps will load immediately, so for example I click on VLC it takes forever to load, I click on another media player it loads up in 1 second this never happened before. The Gimp loads up right away and that's a huge heavy app!

[spamegg]

Those are Qt apps (Gimp is GTK), a few others reported the same problem as you. Someone said they uninstalled "Qt5 Settings" and the problem went away, although you should proceed at your own risk! I believe it's the package called qt5ct "Qt5 Configuration Tool".

[happnatious1]

I get a similar problem once in a while after an update and for me it seems to be the file manager Nemo. Nemo takes so long to launch that I think something has crashed. Any program that uses it in the background will exhibit this behavior. I usually notice it when trying to add an attachment to an email in Thunderbird.
A full Linux mint reboot always fixes it.

[another person]

Those are Qt apps (Gimp is GTK), a few others reported the same problem as you. Someone said they uninstalled "Qt5 Settings" and the problem went away, although you should proceed at your own risk! I believe it's the package called qt5ct "Qt5 Configuration Tool".

If I just reinstall it will that mess things up?

[spamegg]

Don't know! Why don't you start those applications from the Terminal and show us the error messages they give? We might understand why they take so long to start.

[mexjim99]

This appears to be the same issue I've experienced.

I clean installed mint 20.3 cinnamon. I've noticed this delay using keepassxc, ktorrent, barrier, protonvpn.

I used synaptic to remove qt5ct and startups went back to opening as soon as they're started. I re-installed qt5ct and the delay problem was back. Removing qt5ct again resulted in normal operation. The qt thing is new to me. I had no idea there was such a thing let alone what its purpose might be. So far I haven't noticed any other problems with qt5ct removed.

Additional info...
When I started keepassxc from terminal and qt5ct installed here's the result.

....:~$ keepassxc
qt5ct: using qt5ct plugin
qt5ct: D-Bus global menu: no
QObject::startTimer: Timers cannot have negative intervals

One other item I've noticed, and it may or may not be related, is the text size in the screensaver doesn't work. The text stays the same size regardless of how I set the size in the setup.

[another person]

Don't know! Why don't you start those applications from the Terminal and show us the error messages they give? We might understand why they take so long to start.

Yep it seems to be qt5ct plugin when I run in terminal.

[another person]

This appears to be the same issue I've experienced.

I clean installed mint 20.3 cinnamon. I've noticed this delay using keepassxc, ktorrent, barrier, protonvpn.

I used synaptic to remove qt5ct and startups went back to opening as soon as they're started. I re-installed qt5ct and the delay problem was back. Removing qt5ct again resulted in normal operation. The qt thing is new to me. I had no idea there was such a thing let alone what its purpose might be. So far I haven't noticed any other problems with qt5ct removed.

Additional info...
When I started keepassxc from terminal and qt5ct installed here's the result.

....:~$ keepassxc
qt5ct: using qt5ct plugin
qt5ct: D-Bus global menu: no
QObject::startTimer: Timers cannot have negative intervals

One other item I've noticed, and it may or may not be related, is the text size in the screensaver doesn't work. The text stays the same size regardless of how I set the size in the setup.

That seems to have fixed it, thanks. Now things are running quick. I wonder if its related to the latest Mint Cinnamon version?

[louyo2]

Thanks mexjim99, worked a treat.

Lou

[Pooters]

Thanks to all
It was taking 20+ seconds for KPatience to load on Mint XFCE.
Took out QT thingy and now all is well.

[OunceofCommonSense]

Sorry to resurrect an old thread. I have had good results removing qt5ct and load times for some programs (ie Keepassxc) but other programs for example grsync take quite awhile to load still. If memory serves this was not the case with mint 20.2 but now with 20.3 is apparent. Is it necessary to remove other qt5 plugins? What is qt used for?

[mikeflan]

I too want to know what qt is used for. I am running LM 19.3 and opening of PDF files was taking more than 5 seconds. Now after removing qt5ct my PDF files open almost immediately.

[OunceofCommonSense]

This thread helped me sort it out viewtopic.php?t=340731