From looking at your other threads, I can see that you are running Mint.
I've never seen any problems like this with Gimp. But offhand, I can think of a few things to try:
1. Reset the preferences to their defaults.
In gimp open the preferences dialog from the following menu item:
edit->preferences
And then click the reset button. That should set all of Gimps defaults back to their original settings.
If that doesn't fix the issue:
2. Remove the hidden directory in your home directory which contains your personal settings for gimp.
The directory should be called .gimp-2.8
You can either open your file-browser and delete it, or open a terminal and use the command:
NOTE: Be very careful with the above rm command. I recommend copy/pasting it, so you don't accidentally get the wrong path. For example, if you accidentally put a space between '.' and 'gimp-2.8', you would end up recursively deleting everthing in your home folder. Which would not be good!
Once the hidden settings directory has been removed, the next time you start Gimp, it will re-create the directory with default settings again.
If that still doesn't work:
3. Completely uninstall and re-install Gimp
Open a terminal and completely uninstall gimp using the following command:
Code:
sudo apt remove --purge gimp\*
That will remove ALL installed packages for Gimp and remove ALL configurations/settings for Gimp.
NOTE: the expression "
gimp\*" tells apt to remove
all packages whose names begin with "gimp".
But be very careful when typing the above. Again, I recommend copy/pasting the command.
If you accidentally put a space between 'gimp' and '\*' - the expression takes on a completely different, disasterous meaning. "gimp" tells apt to uninstall the main gimp package and then "\*" tells apt to uninstall
all packages on the system. Which would not be good!
So there is
no space. It is "
gimp\*" NOT "
gimp \*"!
Additional:
You could simply use something like the "software centre", or whatever it is called this week to uninstall/reinstall gimp, but the configuration files may end up being left behind. So opening a terminal and using "apt remove" with the "--purge" option ensures that we get a clean uninstall and guarantees that all config files will be removed.
Getting back on track:
Once you have SAFELY removed Gimp, you can reinstall it and any plugins/extras that were removed during the uninstall step.
e.g.
Code:
sudo apt install gimp gimp-data gimp-data-extras gimp-plugin-repository gimp-gmic gimp-help-common gimp-help-en
The above command installs gimp, plus a few extra packages that I'd personally recommend - including extra brushes/presets, GMIC (which has a ton of additional image effects), the plugin registry (which has even more effects) and the help/documentation package.
If you aren't a native english speaker, then you might want to install the help package for your system locale instead of the english one.
There are several other extra packages available for Gimp for things like additional printing support, creating textures, working with RAW image formats, correcting lens distortion, animation etc.
You can see a list of all gimp-related packages by running the following command:
Code:
apt search gimp --names-only
If you do want any further plugins, you can install them using
apt install, as per previous examples.
To wrap things up: I strongly suspect that resetting the preferences or deleting the hidden directory containing the preferences will probably fix the issue.
But if completely uninstalling and re-installing Gimp doesn't fix the issue, I'm afraid I'm completely out of ideas!