Você parece estar usando uma CPU ARM, que o minecraft não suporta.
Eu tenho o Oracle Java, estou abrindo-o como um executável.
Minecraft funciona perfeitamente no meu computador com Windows, mas eu quero no meu laptop Ubuntu.
Quando abro o Minecraft, chego ao launcher, mas quando pressiono play ele pára com a seguinte exceção:
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
Java HotSpot(TM) Client VM warning: You have loaded library /home/thomas/.minecraft/versions/1.8.1/1.8.1-natives-13673203295934/liblwjgl64.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/thomas/.minecraft/versions/1.8.1/1.8.1-natives-13673203295934/liblwjgl.so: /home/thomas/.minecraft/versions/1.8.1/1.8.1-natives-13673203295934/liblwjgl.so: cannot open shared object file: No such file or directory (Possible cause: can't load IA 32-bit .so on a ARM-bit platform)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1937)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1855)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1119)
at org.lwjgl.Sys.run(Sys.java:73)
at java.security.AccessController.doPrivileged(Native Method)
at org.lwjgl.Sys.doLoadLibrary(Sys.java:66)
at org.lwjgl.Sys.loadLibrary(Sys.java:95)
at org.lwjgl.Sys.<clinit>(Sys.java:112)
at bss.I(SourceFile:2488)
at net.minecraft.client.main.Main.main(SourceFile:41)
Você parece estar usando uma CPU ARM, que o minecraft não suporta.