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[SOLVED] FYI...Minecraft w/ Java, OpenGL, and Mesa
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gjy0724
Tux's lil' helper
Tux's lil' helper


Joined: 11 Jun 2005
Posts: 124
Location: Seffner, Florida (Heaven)

PostPosted: Fri Jan 20, 2012 4:15 pm    Post subject: [SOLVED] FYI...Minecraft w/ Java, OpenGL, and Mesa Reply with quote

FYI, I lately started playing, or at least atempting to, MineCraft on my dual boot Win7/Gentoo box. Under Windows it runs fine, however under Gentoo the main menu animation was slow and choppy. After a very short time in-game, less than a minute, I would get something very similar to the following.

Code:
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f7f0c4691b1, pid=14582, tid=140183693674240
#
# JRE version: 6.0_29-b11
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.4-b02 mixed mode linux-amd64 co
mpressed oops)
# Problematic frame:
# C  [r600_dri.so+0x1221b1]  _init+0xf73c1


After doing some searching, I found this thread that gave me a clue. In the end the problem was with mesa and switching my card to used the gallium driver.

Code:
# eselect mesa list

64bit i915 (Intel 915, 945)
64bit i965 (Intel 965, G/Q3x, G/Q4x)
64bit r300 (Radeon R300-R500)
  [1]   classic
  [2]   gallium *
64bit r600 (Radeon R600-R700, Evergreen, Northern Islands)
  [1]   classic
  [2]   gallium * <--- new setting
64bit sw (Software renderer)
  [1]   classic
  [2]   gallium *
32bit i915 (Intel 915, 945)
  [1]   classic *
  [2]   gallium
32bit i965 (Intel 965, G/Q3x, G/Q4x)
  [1]   classic *
  [2]   gallium
32bit r300 (Radeon R300-R500)
  [1]   classic
  [2]   gallium *
32bit r600 (Radeon R600-R700, Evergreen, Northern Islands)
  [1]   classic *
  [2]   gallium
32bit sw (Software renderer)
  [1]   classic
  [2]   gallium *

# eselect mesa 64bit r600 2

That did the trick.
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