Minecraft Forums

I recently got a new laptop and am running a Red Hat 6.2 clone on it. I am having two different issues that I believe to be related to each other. The first is that I am seeing visual artifacts fairly regularly. Holding a tool in my hand, the texture for it will tear. Torches are especially bad:

I also get a shadow over half the screen when holding half-slabs of any type:


Both of these would be manageable, but the last issue I am seeing is more severe. Every 5-10 minutes while playing the game freezes. If I catch it early and press escape several times, it will recover after 2-3 seconds, however if I don't it will crash my entire system. I have found that running in fullscreen mode and unplugging my second monitor reduces the frequency of this (it used to happen every 2-3 minutes and couldn't be recovered using escape). If something happens that causes minecraft to lose full screen, it often causes the system to crash.

I have checked that I have the most up to date graphics drivers (i do have intel integrated graphics, so their all around lack of quality may be part of the issue). I also updated my lwjgl and switched to jre-1.7.0 from Sun since I saw that around the forums, but neither of these solved the issues. I would like a solution that atleast fixes the crashes so I can use my second monitor and windowed mode while playing, even if the graphical issues arent resolved.

Force update minecraft, it may be a corrupted download (it's a rare occurrence, but it still happens)

Also, try installing OptiFine, besides increasing your FPS it does solve some of these issues.

I forced update. When I try running with the original lwjgl that is packaged with minecraft I only get a blank screen. By the time I installed that, plus the jar for the current snapshot I had replaced all the files downloaded by the update. It's not a corrupted download.

Also, since I am running the snapshots, Optifine isn't an option. I do remember trying it before I upgraded however, and had much the same issues (this was before I found the partial fix of full screen).

A new update. It just crashed for me a little while ago, but rather than needing to restart the computer I managed to get logged out (ctrl+alt+backspace) which killed the offending process. When i attempted to restart minecraft I got a "failed to start game" error:

---- Minecraft Crash Report ----
// Why did you do that?
Time: 1/27/13 1:52 PM
Description: Failed to start game
org.lwjgl.LWJGLException: X Error - disp: 0x7f575800fef0 serial: 160 error: BadGC (invalid GC parameter) request_code: 60 minor_code: 0
at org.lwjgl.opengl.LinuxDisplay.globalErrorHandler(LinuxDisplay.java:318)
at org.lwjgl.opengl.LinuxKeyboard.nSetDetectableKeyRepeat(Native Method)
at org.lwjgl.opengl.LinuxKeyboard.setDetectableKeyRepeat(LinuxKeyboard.java:152)
at org.lwjgl.opengl.LinuxKeyboard.destroy(LinuxKeyboard.java:163)
at org.lwjgl.opengl.LinuxDisplay.destroyKeyboard(LinuxDisplay.java:1203)
at org.lwjgl.input.Keyboard.destroy(Keyboard.java:349)
at org.lwjgl.opengl.Display.destroyWindow(Display.java:346)
at org.lwjgl.opengl.Display.access$400(Display.java:62)
at org.lwjgl.opengl.Display$5.destroy(Display.java:832)
at org.lwjgl.opengl.Display.create(Display.java:852)
at org.lwjgl.opengl.Display.create(Display.java:754)
at org.lwjgl.opengl.Display.create(Display.java:736)
at net.minecraft.client.Minecraft.a(SourceFile:233)
at auv.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:507)
at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- System Details --
Details:
Minecraft Version: 13w04a
Operating System: Linux (amd64) version 2.6.32-279.19.1.el6.x86_64
Java Version: 1.7.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 414622584 bytes (395 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xmx1024M -Xms512M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
LWJGL: 2.8.5
OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

Whatever is crashing, is something persistent in linux. I restarted the computer and minecraft started just fine. I see that OpenGL is missing in the error, is it possible my video driver's are crashing? It seems that if that happened I wouldn't have the rest of my gui when I logged back in.

I use Scientific Linux 6.2, because for graduate school I do high performance computing and its useful to have all my computers running the same distro. I know 6.3 is available but 6.2 is younger than minecraft is, so I don't see how that can be an issue.

Try booting a newer distro of linux from a usb flash drive and playing minecraft from there. Or try a newer kernel if you can get one. Scientific Linux 6.3 is still using a 2.6.32 kernel. I'm on kernel 3.7.4. Even Ubuntu LTS is on kernel 3.2.

You also stated you have a new laptop. Having newer versions of xorg and the linux kernel applies more to you in this case. Better support for the newer hardware.

I didn't realize that the kernel was that old. I will give Ubuntu 12.10 a shot and report back.

It's not like crazy old, but a newer kernel can make a difference with newer hardware. Hopefully that addresses your problem. If it doesn't, then I suspect it's more of a hardware problem than a driver issue. Perhaps heat related or bad VRAM.

I never managed to successfully create a ubuntu boot drive from SL (they really don't like each other), but just today SL updated to a newer minor version of the kernel, and I have played for nearly an hour without a crash (still have the graphical issues with the item I'm holding but those are minor). Hopefully this fixed the issue permenantly.