User:Woozle/Minecraft
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2020-01-22 Legacy Launcher issue
Trying to fix Harena's launcher...
"Duplicate key" problem
- https://www.minecraftforum.net/forums/support/java-edition-support/2985630-minecraft-throws-duplicate-key-error
- https://bugs.mojang.com/browse/MCL-11993
- downloaded "the updated version (1.6.93)" https://launcher.mojang.com/v1/objects/eabbff5ff8e21250e33670924a0c5e38f47c840b/launcher.jar
- https://bugs.mojang.com/browse/MCL-11993
This resulted in a loading attempt where the progress bar got all the way to the end (right) before the next error happened:
"Option UseConcMarkSweepGC was deprecated" error
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release. Unrecognized VM option 'CMSIncrementalMode' Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.
- This page suggests modifying JVM arguments:
- H's old settings:
-Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
- Poster's old settings:
-Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
- Poster's new settings:
-Xmx1G -XX:+UseConcMarkSweepGC -XX:-UseAdaptiveSizePolicy -Xmn128M
- H's old settings: