Minecraft Forums

i get this error any idea how to fix it

1:23:29
launcher
Preparing to launch minecraft client for 1.12.2


21:23:29
launcher
Checking installations.


21:23:29
launcher
Minecraft client 1.12.2 is ready to start.


21:23:29
launcher
Starting!


21:23:29
launcher
Using default game log configuration client-1.12.xml (outputs XML)


21:23:30
bib
Setting user: ELJ420320


21:23:31
bib
LWJGL Version: 2.9.4


21:23:31
cev
Reloading ResourceManager: Default


21:23:32
chm
Starting up SoundSystem...


21:23:32
chm
Initializing LWJGL OpenAL


21:23:32
chm
(The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)


21:23:32
chm
OpenAL initialized.


21:23:32
chm
Sound engine started


21:23:34
cdp
Created: 1024x512 textures-atlas


21:23:35
com.mojang.text2speech.NarratorWindows
Narrator library for x64 successfully loaded


21:23:35
bib
Couldn't toggle fullscreen
org.lwjgl.LWJGLException: Failed to set display mode (-2).
at org.lwjgl.opengl.WindowsDisplay.nSwitchDisplayMode(Native Method)
at org.lwjgl.opengl.WindowsDisplay.switchDisplayMode(WindowsDisplay.java:358)
at org.lwjgl.opengl.Display.switchDisplayMode(Display.java:359)
at org.lwjgl.opengl.Display.setDisplayModeAndFullscreenInternal(Display.java:507)
at org.lwjgl.opengl.Display.setFullscreen(Display.java:475)
at bib.r(SourceFile:1556)
at bib.aq(SourceFile:573)
at bib.a(SourceFile:404)
at net.minecraft.client.main.Main.main(SourceFile:123)


21:23:35
buy
Failed to load shader: minecraft:shaders/post/entity_outline.json
nj: Invalid shaders/post/entity_outline.json targets[0]: No OpenGL context found in the current thread.
at nj.a(SourceFile:47)
at ccy.a(SourceFile:75)
at ccy.<init>(SourceFile:56)
at buy.b(SourceFile:246)
at bib.aq(SourceFile:582)
at bib.a(SourceFile:404)
at net.minecraft.client.main.Main.main(SourceFile:123)
Caused by: java.lang.RuntimeException: No OpenGL context found in the current thread.
at org.lwjgl.opengl.GLContext.getCapabilities(GLContext.java:124)
at org.lwjgl.opengl.GL30.glGenFramebuffers(GL30.java:1157)
at cii.g(SourceFile:640)
at bvd.b(SourceFile:98)
at bvd.a(SourceFile:56)
at bvd.<init>(SourceFile:42)
at ccy.a(SourceFile:254)
at ccy.a(SourceFile:109)
at ccy.a(SourceFile:73)
... 5 more

Delete options.txt in your .minecraft folder.