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[Crash]: [BUG] [NEOFORGE 1.21.1] [0.8.12-beta.2] Silent JVM crash during bootstrap on AMD RX 9060 XT (Windows 11) — no crash report generated #649

Description

@JulioJCSF

Modpack Version

1.0.1

Crash Assistant Message (big green button)

All the Mons - 1.0.1 crashed without a crash report. The logs have been uploaded to gnomebot.dev:

latest.log | debug.log | PrismLauncher-0.log head / tail (~47k lines) | crash_assistant_app.log | modlist.txt

Mod list changes on top of the modpack:

Added mods:
.index (resourcepack)
Maxi's-JM+CM_Pixel-U10.zip (resourcepack)
NewGlowingOres-§6[Border]§r.zip (resourcepack)

What happened?

The game crashes silently during the bootstrap/mixin phase, before the mod
loading screen ever appears. No crash report is generated. The early loading
window shows "Launching Minecraft" with CPU: -100.0%, which indicates the JVM
died at the native level.

After investigation across multiple crash sessions, the root cause was isolated
to Sodium 0.8.12-beta.2 conflicting with the AMD RX 9060 XT (RDNA 4 / Navi 44)
on Windows 11
. Sodium applies the AMD_GAME_OPTIMIZATION_BROKEN workaround
at startup but the JVM still crashes silently shortly after, consistently at
the same point in every attempt (right after Datafixer Bootstrap completes).

Bisect result:

  • With Sodium 0.8.12-beta.2 present → silent crash, no crash report, game
    never reaches the title screen
  • With Sodium removed → game loads past the bootstrap phase normally

Crash Assistant confirms (every session):

  • Reached first tick of TitleScreen: false
  • Joined world successfully: false
  • stop() / close() / emergencySave() functions: all false
  • No crash report generated

System:

  • GPU: AMD Radeon RX 9060 XT (RDNA 4, Navi 44)
  • Driver: Adrenalin 26.6.4 (OpenGL 4.6)
  • CPU: AMD Ryzen 7 5700X
  • RAM: 32 GB DDR4
  • Java: Microsoft OpenJDK 21.0.7
  • OS: Windows 11
  • Launcher: Prism Launcher
  • NeoForge: 21.1.234

The Crash Assistant message with all logs is pasted above. The modpack's bundled
version of Sodium (0.8.12-beta.2) appears to be incompatible with RDNA 4 GPUs
on Windows. A possible fix would be updating Sodium to a newer version or adding
an explicit workaround for the RX 9060 XT / Navi 44 architecture.

Crash Log or Disconnect Log

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Latest.Log

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