Hello All,
We have encountered a situation where GL4Java apps make X "go away".
Symptom:
When running X/KDE in 16-bit color depth mode, attempts to run a GL4Java app will hang X. The app's window will pop up, but no graphics ever show up. The GL4Java apps run fine in 24-bit color depth mode.
When the system gets in this state the only thing that still moves is the mouse, but all mouse (and keyboard) operations are ignored. The machine doesn't fully halt; you can still telnet into it while X is hung. At that point "top" will show X taking 99% of the CPU. Even though telnet works, once the system is in this state you can't reboot, and have to power-cycle the box to get its attention. I'm really liking the ext3 filesystem right about now :-).
In both 16 and 24-bit mode C-based OpenGL apps still run fine and use hardware acceleration.
Platform:
Dual 1-GHz PIII running RedHat 7.3 with 2.4.18-4smp kernel, 512MB RAM, plenty of disk.
Elsa Gladiac 64MB GeForce3 video card (also observed the symptom on a similar machine with a 64-MB VisionTek GeForce3 and 1GB RAM).
O/S:
RedHat 7.3, 2.4.18-4smp kernel. We've also observed the problem on RedHat 7.2 (can't recall the kernel version).
Video Driver:
Kernel and GLX modules built from nvidia's src RPMs.
Java Versions:
The symptom has been observed with Sun's JDK 1.3.1_02, 1.4.0, and 1.4.0_01. Apps have been built with the corresponding javac.
GL4Java Version:
2.8.2.0 from the JauSoft site.
Has anybody else observed such a symptom?
Thanks for any feedback,
Rob Hatcherson
ZedaSoft, Inc
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