[Qgis-user] Profile data (other than plugins) that can cause crashes?

[Patrick Dunford]

Good day

Since I first began to use Kubuntu 22.04 from the .0 release I started 
to see crashes on Qgis that weren't experienced on the same versions 
running on previous releases of Kubuntu (certainly the case on 20.04). 
These seem to come and go depending on some random factors, which makes 
it extremely hard to write up a meaningful bug report for the issue 
which is why so far all that has been filed is one with the Ubuntu 
project bug reporting system.

All of these crashes occur when Qgis attempts to display a file 
operation dialog (e.g. add a layer, save a layer definition file, etc).

Today I started to see these issues happening on a system that has been 
trouble free for weeks if not months, the crashes became very consistent 
/ repetitive which had not been observed for a long time up to now if at 
all.

I have tried a new profile and at the moment that makes the problem go 
away. However the next question would be what might be contained within 
a profile that could cause such an issue. Often it is considered the 
most likely issue in a profile is to do with installed plugins. In this 
case, both profiles contain the same plugins which are the 10 that are 
installed as core plugins (5 selected by default). If the issue is 
within a profile, it must be some other part of the profile.

Is there any base of experience about other parts of a profile (such as 
user settings) which can cause issues?

The most obvious different between profiles in this case is 
previewImages folder, however removing these images made no difference 
to the issue. It would require further testing or analysis to try to 
find out where the issue might be occurring. Nevertheless a bug report 
has been filed, attaching the old and new profiles.

Is there any straightforward way of producing a comparison between 
different versions of the databases (which must include all the user 
settings) in a profile.

T.I.A.