The Elder Scrolls IV: Oblivion

This was a huge headache for me that caused some really weird bugs. Windows typically treats folders as case-insensitive - it will automatically merge folders with different casing in the names when you copy directories. Linux is by default case-sensitive, and will copy folders with different casing alongside each other rather than merging. The result is you can end up with multiple texture and mesh folders etc in your Oblivion Data folder. This causes undefined behavior in Wine - sometimes things work fine, other times they do not.

My solution was to uninstall Oblivion, delete my Data folder, and reinstall, before doing the following: normalize casing to lower case with a bash script ( find . -depth -exec rename 's/(.*)\/([^\/]*)/$1\/\L$2/' {} \;
, this script will convert all files and folders to lowercase in the current directory, including all subdirectories below it). You will need to do this on your Data folder to start with, and on all mod folders BEFORE you copy them into the data directory. My suggestion is download and extract all the mods you want to use, and run the bash script on the entire downloads folder so you can lowercase them all in one go before copying into data.

The only side effect I've noticed from doing this, is some patch ESP files expect an exact filename in the ESP they are overriding, you will need to rename that base ESP file to the proper casing based on what you see in the original extracted mod folder. Unique Landscape ESPs is one I've had to do this with.

ext4 file supports case folding for specified directories. This can be a simpler method than relying on file renames. Please see the following for more information:

www.collabora.com/news-and-blog/blog/2020/08/27/using-the-linux-kernel-case-insensitive-feature-in-ext4/

wiki.archlinux.org/title/Ext4#Enabling_case-insensitive_mode