Fix Alt Gr

A simple Minecraft mod that (mostly) fixes the MC-127862 bug, which sometimes makes pressing the Alt Gr key lock your left control key in a pressed state.

26.0K Downloads

fabricquiltutility

Rent Server with this Mod

About this Mod

Fix Alt Gr

A simple Minecraft mod that (mostly) fixes the MC-127862 bug, which sometimes makes the Alt Gr key lock your left control key in a pressed state. It prevents the bug from happening in text fields in most situations.

License

Fix Alt Gr is licensed under the GNU Lesser General Public License v3.0

Available Versions

Fix Alt Gr 3.0.2 [1.21.x]release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric, quilt

July 19, 2025

Fix Alt Gr 3.0.1 [1.21.x]release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6fabric, quilt

January 18, 2025

Fix Alt Gr 3.0.0 [1.19.x]release

MC 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4fabric, quilt

June 25, 2024

Fix Alt Gr 3.0.0 [1.20.x]release

MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6fabric, quilt

June 25, 2024

Fix Alt Gr 3.0.0 [1.21.x]release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4fabric, quilt

June 24, 2024

How to Install Fix Alt Gr on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "Fix Alt Gr". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricquilt

Minecraft Versions

1.21.8, 1.21.7, 1.21.6 (+37 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Fix Alt Gr server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.

Is Fix Alt Gr compatible with fabric and quilt?

Fix Alt Gr officially supports fabric, quilt for Minecraft 1.21.8, 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Fix Alt Gr – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Fix Alt Gr consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.