1. Start Minecraft in full screen mode (this is important)
2. Multiplayer
3. Direct Connect
4. Server Address = 127.0.0.1
5. Crash!

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 10/11/17 2:26 PM
Description: Rendering screen

java.lang.NullPointerException: Rendering screen
at blk.d_(SourceFile:433)
at blk.c(SourceFile:429)
at bky.a(SourceFile:44)
at buq.a(SourceFile:1079)
at bib.az(SourceFile:1023)
at bib.a(SourceFile:419)
at net.minecraft.client.main.Main.main(SourceFile:123)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Thread: Client thread
Stacktrace:
at blk.d_(SourceFile:433)
at blk.c(SourceFile:429)
at bky.a(SourceFile:44)

– Screen render details –
Details:
Screen name: bky
Mouse location: Scaled: (215, 184). Absolute: (863, 289)
Screen size: Scaled: (404, 257). Absolute: (1615, 1026). Scale factor of 4
Stacktrace:
at buq.a(SourceFile:1079)
at bib.az(SourceFile:1023)
at bib.a(SourceFile:419)
at net.minecraft.client.main.Main.main(SourceFile:123)

– System Details –
Details:
Minecraft Version: 1.12.2
Operating System: Linux (amd64) version 4.10.0-35-generic
Java Version: 1.8.0_131, Oracle Corporation
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 297950448 bytes (284 MB) / 443105280 bytes (422 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Launched Version: 1.12.2
LWJGL: 2.9.4
OpenGL: GeForce 8600M GT/PCIe/SSE2 GL version 3.3.0 NVIDIA 340.104, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 2x Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz