If I run a JOGL application and put my laptop in sleep, GLJPanel will crash when returning from sleep mode with a: Error making context 0x20000 current on Thread AWT-EventQueue-0... (Full trace: http://pastebin.com/eCDKbs25) Here is a short program which reproduces this behavior: http://pastebin.com/GGMe0dKB This error does not occur when using GLCanvas. OS version: Windows 7 6.1 amd64 JAVA version: 1.6.0_21 GL_VENDOR: NVIDIA Corporation GL_RENDERER: GeForce 310M/PCIe/SSE2 GL_VERSION: 3.3.0 GL class: jogamp.opengl.gl4.GL4bcImpl GLCapabilities: GLCaps[wgl vid 0x7 arb: rgba 8/8/8/8, opaque, accum-rgba 0/0/0/0, dp/st/ms 24/0/2, sample-ext, default, dbl, mono , hw, GLProfile[GL3bc/GL3bc.hw], offscr[fbo]] Using latest auto-aggregated build: Implementation Version: 2.0.2-rc-20130518 Implementation Build: 2.0-b993-20130518 (Original thread: http://forum.jogamp.org/GLJPanel-crashes-when-resuming-from-sleep-mode-td4029210.html)