Please confirm the following.
What version of the Modrinth App are you using?
0.12.6
What operating systems are you seeing the problem on?
Linux
Describe the bug
I am literally unable to open Minecraft via Modrinth, Even on a fully vanilla install, Here is the log for it btw, I even checked that all Java installs were well installed and the log says:
---- Minecraft Crash Report ----
// Oops.
Time: 2026-04-10 17:31:47
Description: Initializing game
java.lang.IllegalStateException: Failed to initialize GLFW, errors: [GLFW 0x1000E] X11: The DISPLAY environment variable is missing
at com.mojang.blaze3d.platform.GLX._initGlfw(GLX.java:59)
at com.mojang.blaze3d.systems.RenderSystem.initBackendSystem(RenderSystem.java:179)
at net.minecraft.client.Minecraft.(Minecraft.java:503)
at net.minecraft.client.main.Main.main(Main.java:232)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:61)
at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28)
A detailed walkthrough of the error, its code path and all known details is as follows:
-- Head --
Thread: Render thread
Stacktrace:
at com.mojang.blaze3d.platform.GLX._initGlfw(GLX.java:59)
at com.mojang.blaze3d.systems.RenderSystem.initBackendSystem(RenderSystem.java:179)
at net.minecraft.client.Minecraft.(Minecraft.java:503)
-- Initialization --
Details:
Modules:
Stacktrace:
at net.minecraft.client.main.Main.main(Main.java:232)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:61)
at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28)
-- System Details --
Details:
Minecraft Version: 26.1.2
Minecraft Version ID: 26.1.2
Operating System: Linux (amd64) version 6.18.7-76061807-generic
Java Version: 25.0.2, Azul Systems, Inc.
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Azul Systems, Inc.
Memory: 137181920 bytes (130 MiB) / 350224384 bytes (334 MiB) up to 2147483648 bytes (2048 MiB)
Memory (heap): init: 752MiB, used: 201MiB, committed: 334MiB, max: 2048MiB
Memory (non-head): init: 007MiB, used: 109MiB, committed: 111MiB, max: 000MiB
CPUs: 16
Processor Vendor: AuthenticAMD
Processor Name: AMD Ryzen 7 3700X 8-Core Processor
Identifier: AuthenticAMD Family 23 Model 113 Stepping 0
Microarchitecture: Zen 2
Frequency (GHz): -0.00
Number of physical packages: 1
Number of physical CPUs: 8
Number of logical CPUs: 16
Graphics card #0 name: GA102 [GeForce RTX 3080 Ti]
Graphics card #0 vendor: NVIDIA Corporation (0x10de)
Graphics card #0 VRAM (MiB): 16416.00
Graphics card #0 deviceId: 0x2208
Graphics card #0 versionInfo: unknown
Virtual memory max (MiB): 44526.15
Virtual memory used (MiB): 13043.30
Swap memory total (MiB): 20479.49
Swap memory used (MiB): 0.00
Space in storage for jna.tmpdir (MiB): available: 1616771.13, total: 1912659.63
Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): available: 1616771.13, total: 1912659.63
Space in storage for io.netty.native.workdir (MiB): available: 1616771.13, total: 1912659.63
Space in storage for java.io.tmpdir (MiB): available: 4808.58, total: 4809.33
Space in storage for workdir (MiB): available: 1616771.13, total: 1912659.63
JVM Flags: 1 total; -Xmx2048M
Debug Flags: 0 total;
Launched Version: 26.1.2
Launcher name: theseus
Backend library: LWJGL version 3.4.1+2
Backend API: Unknown
Window size:
GFLW Platform:
Render Extensions: ERR
GL debug messages:
Is Modded: Probably not. Client jar signature and brand is untouched
Universe: 404
Type: Client
Locale: en_US
System encoding: UTF-8
File encoding: UTF-8
CPU: 16x AMD Ryzen 7 3700X 8-Core Processor
Steps to reproduce
Try to run Minecraft.
Expected behavior
It works as long as there are no mods or the mods have no issues with themselves or other mods.
Additional context
I am on POP! OS and in COSMIC Store it uses Flathub as the source for Modrinth I think.
Edited Context 1: Lunar Client works and it seems to be able to run Modrinth mods, So for now that will work as a workaround for me.
Please confirm the following.
What version of the Modrinth App are you using?
0.12.6
What operating systems are you seeing the problem on?
Linux
Describe the bug
I am literally unable to open Minecraft via Modrinth, Even on a fully vanilla install, Here is the log for it btw, I even checked that all Java installs were well installed and the log says:
---- Minecraft Crash Report ----
// Oops.
Time: 2026-04-10 17:31:47
Description: Initializing game
java.lang.IllegalStateException: Failed to initialize GLFW, errors: [GLFW 0x1000E] X11: The DISPLAY environment variable is missing
at com.mojang.blaze3d.platform.GLX._initGlfw(GLX.java:59)
at com.mojang.blaze3d.systems.RenderSystem.initBackendSystem(RenderSystem.java:179)
at net.minecraft.client.Minecraft.(Minecraft.java:503)
at net.minecraft.client.main.Main.main(Main.java:232)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:61)
at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28)
A detailed walkthrough of the error, its code path and all known details is as follows:
-- Head --
Thread: Render thread
Stacktrace:
at com.mojang.blaze3d.platform.GLX._initGlfw(GLX.java:59)
at com.mojang.blaze3d.systems.RenderSystem.initBackendSystem(RenderSystem.java:179)
at net.minecraft.client.Minecraft.(Minecraft.java:503)
-- Initialization --
Details:
Modules:
Stacktrace:
at net.minecraft.client.main.Main.main(Main.java:232)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:61)
at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28)
-- System Details --
Details:
Minecraft Version: 26.1.2
Minecraft Version ID: 26.1.2
Operating System: Linux (amd64) version 6.18.7-76061807-generic
Java Version: 25.0.2, Azul Systems, Inc.
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Azul Systems, Inc.
Memory: 137181920 bytes (130 MiB) / 350224384 bytes (334 MiB) up to 2147483648 bytes (2048 MiB)
Memory (heap): init: 752MiB, used: 201MiB, committed: 334MiB, max: 2048MiB
Memory (non-head): init: 007MiB, used: 109MiB, committed: 111MiB, max: 000MiB
CPUs: 16
Processor Vendor: AuthenticAMD
Processor Name: AMD Ryzen 7 3700X 8-Core Processor
Identifier: AuthenticAMD Family 23 Model 113 Stepping 0
Microarchitecture: Zen 2
Frequency (GHz): -0.00
Number of physical packages: 1
Number of physical CPUs: 8
Number of logical CPUs: 16
Graphics card #0 name: GA102 [GeForce RTX 3080 Ti]
Graphics card #0 vendor: NVIDIA Corporation (0x10de)
Graphics card #0 VRAM (MiB): 16416.00
Graphics card #0 deviceId: 0x2208
Graphics card #0 versionInfo: unknown
Virtual memory max (MiB): 44526.15
Virtual memory used (MiB): 13043.30
Swap memory total (MiB): 20479.49
Swap memory used (MiB): 0.00
Space in storage for jna.tmpdir (MiB): available: 1616771.13, total: 1912659.63
Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): available: 1616771.13, total: 1912659.63
Space in storage for io.netty.native.workdir (MiB): available: 1616771.13, total: 1912659.63
Space in storage for java.io.tmpdir (MiB): available: 4808.58, total: 4809.33
Space in storage for workdir (MiB): available: 1616771.13, total: 1912659.63
JVM Flags: 1 total; -Xmx2048M
Debug Flags: 0 total;
Launched Version: 26.1.2
Launcher name: theseus
Backend library: LWJGL version 3.4.1+2
Backend API: Unknown
Window size:
GFLW Platform:
Render Extensions: ERR
GL debug messages:
Is Modded: Probably not. Client jar signature and brand is untouched
Universe: 404
Type: Client
Locale: en_US
System encoding: UTF-8
File encoding: UTF-8
CPU: 16x AMD Ryzen 7 3700X 8-Core Processor
Steps to reproduce
Try to run Minecraft.
Expected behavior
It works as long as there are no mods or the mods have no issues with themselves or other mods.
Additional context
I am on POP! OS and in COSMIC Store it uses Flathub as the source for Modrinth I think.
Edited Context 1: Lunar Client works and it seems to be able to run Modrinth mods, So for now that will work as a workaround for me.