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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[MC-4496] Fresh Minecraft install downloads wrong architecture</title>
                <link>https://bugs.mojang.com/browse/MC-4496</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;When trying to run Minecraft for the first time on Ubuntu 12.10 (64-bit) the loader downloads the 32-bit version of the game.&lt;/p&gt;</description>
                <environment>Ubuntu 12.10, Java 1.7.0_09, both 64-bit</environment>
        <key id="17013">MC-4496</key>
            <summary>Fresh Minecraft install downloads wrong architecture</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="jonnynomad">Jon Thorson</reporter>
                        <labels>
                    </labels>
                <created>Wed, 12 Dec 2012 03:58:12 +0100</created>
                <updated>Tue, 16 Apr 2013 07:55:23 +0200</updated>
                            <resolved>Tue, 16 Apr 2013 07:55:23 +0200</resolved>
                                    <version>Minecraft 1.4.5</version>
                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                            <comments>
                            <comment id="34184" author="kaasinees" created="Tue, 8 Jan 2013 11:23:38 +0100"  >&lt;p&gt;Not fixed. Not invalid either!&lt;/p&gt;

&lt;p&gt;I said before this is a problem with minecraft only, other java games detect libraries properly.&lt;/p&gt;

&lt;p&gt;PLEASE FIX. update your LWJGL or whatever libs that is causing this problem.&lt;/p&gt;</comment>
                            <comment id="27903" author="jonnynomad" created="Wed, 12 Dec 2012 07:33:32 +0100"  >&lt;p&gt;I found a work around. Seems that Minecraft isn&apos;t specifically looking for the 64-bit java libraries for some reason.&lt;/p&gt;

&lt;p&gt;Adding:&lt;br/&gt;
export LD_LIBRARY_PATH=&quot;/opt/java/jre/lib/amd64&quot;&lt;/p&gt;

&lt;p&gt;to a start script fixes the issue.&lt;/p&gt;

&lt;p&gt;Funny, I don&apos;t have this problem with other Java apps like DBvisualizer or Delver.&lt;/p&gt;</comment>
                            <comment id="27900" author="cubethethird" created="Wed, 12 Dec 2012 05:26:11 +0100"  >&lt;p&gt;Have you updated your LWJGL files? If not you can do it by following the instructions &lt;a href=&quot;http://goo.gl/oeSRc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="27899" author="jonnynomad" created="Wed, 12 Dec 2012 05:16:11 +0100"  >&lt;p&gt;Here&apos;s the error:&lt;/p&gt;

&lt;p&gt;nomad@salanger7:~$ java -jar minecraft.jar &lt;br/&gt;
asdf&lt;br/&gt;
java.io.FileNotFoundException: /home/nomad/.minecraft/lastlogin (No such file or directory)&lt;br/&gt;
	at java.io.FileInputStream.open(Native Method)&lt;br/&gt;
	at java.io.FileInputStream.&amp;lt;init&amp;gt;(FileInputStream.java:138)&lt;br/&gt;
	at net.minecraft.LoginForm.readUsername(LoginForm.java:110)&lt;br/&gt;
	at net.minecraft.LoginForm.&amp;lt;init&amp;gt;(LoginForm.java:55)&lt;br/&gt;
	at net.minecraft.LauncherFrame.&amp;lt;init&amp;gt;(LauncherFrame.java:23)&lt;br/&gt;
	at net.minecraft.LauncherFrame.main(LauncherFrame.java:167)&lt;br/&gt;
	at net.minecraft.MinecraftLauncher.main(MinecraftLauncher.java:13)&lt;br/&gt;
Exception in thread &quot;Thread-3&quot; java.lang.UnsatisfiedLinkError: /home/nomad/.minecraft/bin/natives/liblwjgl.so: /home/nomad/.minecraft/bin/natives/liblwjgl.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)&lt;br/&gt;
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)&lt;br/&gt;
	at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1939)&lt;br/&gt;
	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1864)&lt;br/&gt;
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1825)&lt;br/&gt;
	at java.lang.Runtime.load0(Runtime.java:792)&lt;br/&gt;
	at java.lang.System.load(System.java:1059)&lt;br/&gt;
	at org.lwjgl.Sys$1.run(Sys.java:69)&lt;br/&gt;
	at java.security.AccessController.doPrivileged(Native Method)&lt;br/&gt;
	at org.lwjgl.Sys.doLoadLibrary(Sys.java:65)&lt;br/&gt;
	at org.lwjgl.Sys.loadLibrary(Sys.java:81)&lt;br/&gt;
	at org.lwjgl.Sys.&amp;lt;clinit&amp;gt;(Sys.java:98)&lt;br/&gt;
	at net.minecraft.client.Minecraft.F(SourceFile:1975)&lt;br/&gt;
	at asr.&amp;lt;init&amp;gt;(SourceFile:20)&lt;br/&gt;
	at net.minecraft.client.Minecraft.&amp;lt;init&amp;gt;(SourceFile:75)&lt;br/&gt;
	at asi.&amp;lt;init&amp;gt;(SourceFile:36)&lt;br/&gt;
	at net.minecraft.client.MinecraftApplet.init(SourceFile:36)&lt;br/&gt;
	at net.minecraft.Launcher.replace(Launcher.java:136)&lt;br/&gt;
	at net.minecraft.Launcher$1.run(Launcher.java:79)&lt;br/&gt;
^Cnomad@salanger7:~$ java -version&lt;br/&gt;
java version &quot;1.7.0_09&quot;&lt;br/&gt;
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)&lt;br/&gt;
Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02, mixed mode)&lt;br/&gt;
nomad@salanger7:~$ uname -a&lt;br/&gt;
Linux salanger7 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:48:01 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux&lt;br/&gt;
nomad@salanger7:~$ &lt;/p&gt;</comment>
                            <comment id="27897" author="cubethethird" created="Wed, 12 Dec 2012 04:54:53 +0100"  >&lt;p&gt;What specifically is telling you that the game is running in 32 instead of 64 bit?&lt;/p&gt;</comment>
                            <comment id="27896" author="jonnynomad" created="Wed, 12 Dec 2012 04:17:07 +0100"  >&lt;p&gt;There are no versions of Java installed other than the one specified and JAVA_HOME is pointing to it. Also starting the loader with the full path to the 64-bit version of Java yields the same result.&lt;/p&gt;</comment>
                            <comment id="27894" author="cubethethird" created="Wed, 12 Dec 2012 04:01:39 +0100"  >&lt;p&gt;The game is not architecture specific. This is entirely dependant on your java install. If you have both 32 and 64 bit java installs, make sure the java command runs the 64 bit one.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="14981">MC-3090</issuekey>
        </issuelink>
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