Table of Contents
What is LWJGL
What is LWJGL?
LWJGL is the LightWeight Java Game Library. Essentially, it is what Minecraft uses for graphics, sound, and input. The latest version of LWJGL is 2.9.1. Currently, the game ships with LWJGL 2.4.2 on the old launcher. However, the new launcher will always provide the latest build.
- Updating will fix some input bugs where keys seem to get stuck if you click at the same time. It also removes the "ghost" mouse pointer clicking.
- Some users report a performance increase upon updating.
- This can also potentially fix some issues regarding sound not working/cutting out.
- It has been reported to fix intermittent crashes on Windows.
- It has also been known to resolve the "cannot get JAWT interface" error for Mac users using Java 7.
- With 2.8.1, on most 64 bit computers, the lwjgl64.dll update will cause a black screen crash. You can revert to the backup version you have saved if needed.
- Again on several 64 bit computers, the OpenAL64.dll update can cause a sound glitch that makes bursting sounds. Keep a backup in case you need to rollback.
- Version 2.8.5 generally breaks shift-clicking, 2.8.4 and 2.9.0 does not - you can change the url in your browser to access 2.8.4 or 2.9.0 rather than 2.8.5.
- With version 2.8.5 on Windows, clicking mouse button while holding W/A/S/D keys stops the walking. This bug is already fixed in LWJGL 2.9.0
- LWJGL 2.8.5 has a bug which sends a false signal that the user released all currently pressed keyboard keys when a mouse button is pressed. That means that your building will be significantly slower. Do not update to this version if this bothers you.
- This bug seems to be fixed when playing in fullscreen mode (Default F11), or updating to LWJGL 2.9.0.
I have created a simple utility to update LWJGL to the current, most stable build of LWJGL.
You can download it here.
Current versions the auto updater has: 2.9.0, 2.8.4 (old version, do not use unless you have a reason)
Where to download
Select the latest stable release and download the lwjgl-X.X.X.zip. You should also backup your .minecraft folder before following the steps below. As a last resort, you can use the Minecraft Launcher's Force Download option to reset the files.
What to replace
In the lwjgl-X.X.X.zip, there should be two folders, named jar and natives. You should replace the files in .minecraft/bin and .minecraft/bin/natives with the versions from the .zip.
The .minecraft folder's location varies by operating system.
- Windows: %appdata%/.minecraft
- Mac OS X: ~/Library/Application Support/minecraft
- GNU/Linux: ~/.minecraft
All operating systems
You should replace these files in .minecraft/bin/
You should replace these files in .minecraft\bin\natives\
You should replace these files in minecraft/bin/natives/
- For this one, create a copy of openal.dylib, then rename it to libopenal.dylib
You should replace these files in .minecraft/bin/natives/