Cursor Extended V4.1.0 Hangs On Fabric: A Bug Report

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Cursor Extended v4.1.0 Hangs on Fabric: A Bug Report

Hey everyone! Today, we're diving into a peculiar issue reported by a user regarding the Cursor Extended mod for Fabric. Specifically, version v4.1.0+1.21.9 seems to be causing a soft hang at launch, and we're going to break down the details, potential causes, and what you can do if you encounter this problem. So, let's get started!

The Initial Problem: Soft Hang at Launch

The user, fishstiz, reported that upgrading from Cursors Extended Fabric v4.0.5+1.21.9 to v4.1.0+1.21.9 resulted in a soft hang during the game launch. This hang occurs before the Mojang loading screen appears, with the launcher window showing "(Not Responding)" in the title bar. Rolling back to the previous version (v4.0.5) resolves the issue, indicating that the problem is likely within the v4.1.0 release. This is a critical issue because it prevents players from even getting into the game, making it unusable.

When encountering such problems, it's essential to have a systematic approach to identify the root cause. Here's a breakdown of what the user did and what we can learn from it:

  1. Isolate the Issue: The user pinpointed that the upgrade to v4.1.0 was the direct cause. This step is crucial because it narrows down the scope of the problem. Without this, troubleshooting could become a wild goose chase through numerous mods and configurations.
  2. Provide Clear Symptoms: Describing the hang occurring "before the Mojang loading screen" is incredibly helpful. It indicates that the issue is likely happening during the initial mod loading or initialization phase, rather than later in the game's startup process.
  3. Test Rollbacks: Rolling back to a previous version and confirming that it resolves the problem is a robust way to confirm that the new version is the culprit. This eliminates other potential causes, such as changes in the Minecraft version or other mods.

Steps to Reproduce the Bug

To reproduce this bug, the following steps were outlined:

  1. Start with Cursors Extended Fabric v4.0.5+1.21.9.
  2. Upgrade to Cursors Extended Fabric v4.1.0+1.21.9.
  3. Launch the game.

This straightforward process allows anyone experiencing the issue to confirm whether they are encountering the same bug. It also provides developers with a clear method to replicate the problem on their end, which is crucial for debugging and fixing the issue. The simpler the steps to reproduce, the faster a fix can usually be implemented.

Expected vs. Actual Behavior

Expected Behavior: The game should load normally and proceed to the start menu without any issues. This is the standard behavior when everything is functioning correctly. The expectation is that upgrading a mod should not cause a complete halt in the game's startup process.

Actual Behavior: The game hangs on the initial window before the Mojang loading screen appears, and the window displays "(Not Responding)." This indicates a severe issue, as the game is unable to initialize properly and becomes unresponsive. The soft hang means the game doesn't fully crash, but it becomes stuck, preventing any further progress.

The discrepancy between expected and actual behavior is a clear sign of a bug. Identifying this difference is a key step in the bug reporting process, as it highlights the deviation from the norm and emphasizes the need for a solution.

Diving into the Logs

Log files are your best friends when troubleshooting Minecraft mod issues! The user provided two latest.log files:

  • One for version 4.0.5 (the working version).
  • One for version 4.1.0 (the problematic version).

These logs are invaluable because they capture the sequence of events during the game's startup, including any errors, warnings, or other relevant information. By comparing the logs, developers can pinpoint exactly where the hang occurs and what might be causing it.

Unfortunately, the user mentioned that crash logs weren't generated due to the soft hang. This is a common issue with soft hangs – the game doesn't crash in a way that triggers the crash reporting system. However, the latest.log files still provide a wealth of information.

Analyzing the Logs

To effectively analyze the logs, you'll want to look for a few key things:

  1. Differences: Start by comparing the logs side-by-side. Look for any significant differences in the loading sequence or any unusual entries in the 4.1.0 log that are absent in the 4.0.5 log.
  2. Errors and Warnings: Search for any lines that indicate errors or warnings. These are often clues to what went wrong. Keywords like "error," "warn," "exception," and "failed" are good starting points.
  3. Last Entries: Examine the last few entries in the 4.1.0 log. These might give you an idea of what the game was trying to do just before it hung. If there’s a particular mod or process that consistently appears near the end of the log, that could be a potential culprit.

In this case, because the hang occurs so early in the startup process, the logs will likely show the initialization of mods. It's possible that a change in 4.1.0 interacts poorly with another mod, or that a specific initialization routine is causing the hang. Examining the log snippets related to Cursor Extended and other core mods is a good approach.

Potential Causes and Solutions

Given the information provided, here are a few potential causes and solutions:

  1. Mod Incompatibility: The most likely cause is an incompatibility between Cursors Extended v4.1.0 and another mod in the user's setup. Minecraft modpacks can be complex ecosystems, and interactions between mods can sometimes lead to unexpected issues.
    • Solution: The user mentioned having a wide variety of mods. To narrow down the culprit, they could try a process of elimination: disable mods in batches, launch the game, and see if the issue persists. This can help identify which mod is conflicting with Cursors Extended.
  2. Initialization Issue: There might be a problem in the initialization code of Cursors Extended v4.1.0. A new feature or change in the mod could be causing a deadlock or infinite loop during startup.
    • Solution: Developers would need to examine the mod's source code and look for potential issues in the initialization process. Debugging tools and techniques can help pinpoint where the hang occurs.
  3. Fabric API Conflict: It's possible that Cursors Extended v4.1.0 relies on a specific version of the Fabric API, and a conflict with the installed version could be causing the issue.
    • Solution: Check the mod's dependencies and ensure that the correct version of the Fabric API is installed. Updating or downgrading the Fabric API might resolve the problem.
  4. Resource Loading: A problem with resource loading (e.g., textures, models) could also cause a hang. If Cursors Extended v4.1.0 introduces new assets, a failure to load these could lead to a stall.
    • Solution: Check the log files for any resource loading errors. Ensure that all assets are correctly packaged and accessible.

Community Contribution and Collaboration

Bug reporting and troubleshooting are community efforts! If you're experiencing a similar issue, here are some things you can do:

  1. Share Your Experience: If you encounter the same problem, comment on the original bug report or forum post. Providing additional information, such as your mod list and log files, can help developers understand the issue better.
  2. Try the Elimination Method: If you have a large modpack, try disabling mods in batches to see if you can identify a conflict. This is a time-consuming process, but it's often the most effective way to find the culprit.
  3. Test Different Fabric Versions: Sometimes, the issue might be related to the Fabric loader itself. Try using different versions of Fabric to see if that resolves the problem.
  4. Reach Out to Mod Developers: If you suspect a conflict between mods, reach out to the developers of both mods. They might be able to provide insights or even collaborate on a fix.

By working together, we can help identify and resolve issues more quickly, making the modding experience smoother for everyone. Remember, detailed bug reports with clear steps to reproduce and relevant logs are incredibly valuable to developers.

Final Thoughts

The soft hang issue with Cursors Extended v4.1.0 highlights the complexities of modded Minecraft. While individual mods are often well-tested, interactions between them can lead to unexpected problems. A systematic approach to troubleshooting, detailed bug reports, and community collaboration are essential for resolving these issues.

If you're encountering this problem, don't despair! By following the steps outlined in this article and contributing to the community effort, you can help get this issue resolved and get back to enjoying your modded Minecraft experience. Keep those logs handy, stay patient, and happy gaming, guys!