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OpusOne

Member

Registered: 2023-05-31

Posts: 189

[Solved] Qt file dialogs extremely slow all of a sudden

Hi all,

I just ran into an issue with all Qt file dialogs having suddenly become very slow, both opening and closing them.
Searching a bit in the forum before posting, I found this old thread:

https://bbs.archlinux.org/viewtopic.php?id=279464

And it turns out it was the exact same issue. Still opening this new thread in case others run into the same thing, and also to try and understand it.

I deleted the .config/QtProject.conf file and after that, the problem was solved.

I don't know what happened that created this file (it was about 67 MB) and why it did cause this issue. If anyone can explain what can cause this, that would be interesting, as the previous thread did provide the solution but did not really elaborate further. I don't know Qt well enough to figure it out.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,523

Re: [Solved] Qt file dialogs extremely slow all of a sudden

I don't know what happened that created this file (it was about 67 MB) and why it did cause this issue.

I deleted the .config/QtProject.conf file

It would be interesting to see what's up w/ those files, but it's now living in /dev/null …

QtProject.conf is just the basic Qt config file, the file dialog settings and history are stored there as well - some entry is gonna be massively bogus (my version is 4kB, ie. the minimal file size, it's actually 1354 bytes in there) but there's no longer a way of telling which, how or why.

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OpusOne

Member

Registered: 2023-05-31

Posts: 189

Re: [Solved] Qt file dialogs extremely slow all of a sudden

Ah dang, yes. I unfortunately didn't think of keeping it to inspect it. It's possible that some Qt app I ran did generate bogus entries in this file. Next time it happens, i'll think of keeping it. This file growing to 67 MB was definitely not normal.

I just remember than I ran one Qt app that I don't run very often and that I noticed the issue some time after that, not sure it is related but it gives me something to investigate. This app is QCAD ( https://archlinux.org/packages/extra/x86_64/qcad/ ) and it tends to crash quite a bit, especially upon exit, so this is a suspect.