Kubuntu user causes monitor to display at wrong resolution-- for just one user only.

[taxpayer]

This morning I discovered that my screen appears to be set for the wrong resolution and displays everything larger than it should be. I assumed that this was due to a setting on the monitor, but eventually determined that both the monitor and kubuntu (display configuration) are set for 2560X1440. Eventually I tried setting up a second user, and was surprised to find that the problem was solved; for this new user everything displays properly.
So something is wrong with the settings for my initial user but OK for the new user. Where might I look to figure this out?

[skyfishgoo]

it has to be somewhere in your .config or .local directories because everything your user is saved in one or the other (or both).

from my notes:

# brute force troubleshooting...
mv ~/.config ~/.configBORKED
mv ~/.local ~/.localBORKED
# logout and log back in again to force plasma to recreate the folders with default settings
# open split views of the folders for comparison and file copy
dolphin --split ~/.config ~/.configBORKED
dolphin --split ~/.local ~/.localBORKED
# copy back half of the BORKED folder contents at a time and relog to see if issue returns
# if it does, then delete the folder again, relog, and only copy half of that previous half
# repeat until the culprit is found, then finally, copy back everything BUT that culprit bit
​

[skyfishgoo]

it has to be somewhere in your .config or .local directories because everything your user is saved in one or the other (or both).

from my notes:

# brute force troubleshooting...
mv ~/.config ~/.configBORKED
mv ~/.local ~/.localBORKED
# logout and log back in again to force plasma to recreate the folders with default settings
# open split views of the folders for comparison and file copy
dolphin --split ~/.config ~/.configBORKED
dolphin --split ~/.local ~/.localBORKED
# copy back half of the BORKED folder contents at a time and relog to see if issue returns
# if it does, then delete the folder again, relog, and only copy half of that previous half
# repeat until the culprit is found, then finally, copy back everything BUT that culprit bit
​

[taxpayer]

Thanks for that. I wasn't sure which directories to delete. Turned out that the problem was in .config. Restored now.