My first task is to run Minecraft without any errors. To start I installed and ran Minecraft on Ubuntu using Alloc's Easy Minecraft Installer. This creates a handy desktop icon on the account I used to run the install script. Of course, using this icon precludes seeing any error output from the program. Once you've installed Minecraft using the script, you can copy the icon file to any other desktop directory, and then update the command line with the name of the new home directory. Then, set the properties of the shortcut file to "executable"
To review the error output, I open Terminal and paste in the command:
java -jar /home/[myhomedir]/.minecraft/minecraft.jar
where [myhomedir] is the name of my home directory.
Or, you can use the tilde ("~"):
java -jar ~/.minecraft/minecraft.jar
This works in Terminal, but not in the destop icon command field.
My first error is:
GL ERROR Pre render 1281: Invalid value
To resolve this error, in ~/.minecraft/options.txt, I set advancedOpengl:true (this was originally false)
Now I get:
Failed to open device (/dev/input/event3): Failed to open device /dev/input/event3 (13)
The fix for this, from the World of Minecraft support forum, is the following Terminal command:
sudo chmod go=u /dev/input/event*
This worked; I now see:
Linux plugin claims to have found 4 controllers
So, no errors!