Program received signal SIGINT, Interrupt.Ġx00007ffff243e35c in ? () from /usr/lib/libnvidia-glcore.so.375.20 With KDE (kwin 5.8.3) and this driver a little test program I wrote that uses OpenGL hangs when calling the function SDL_GL_SwapWindow(win) (happens only when there is another OpenGL program running) If I can provide any other data, please let me know. I have attached the taken from the system with the GTX970 while reproducing the problem.
This issue does seem to be at least somewhat limited to certain generations of GPU, however, because on my laptop with an NVS5400m, I can run at least 20 glxgears instances simultaneously and the KDE screen lock still works normally even with 10 Chrome windows open. I can also reproduce by launching a few (4ish) Google Chrome windows and then attempting to launch a game (Xonotic) (which crashes entirely) or lock the screen in KDE (which results in a very sluggish and essentially non-functional lock screen. If I launch 6-10 instances, the most-recently-launched instance will display a black window only. I can reproduce this quite easily by running multiple copies of “glxgears” simultaneously. Starting with the 375.20 driver release, if I try to run multiple OpenGL applications at the same time on my GTX970, often launching another OpenGL application will result in the application either crashing or failing to work properly (textures not loading, extreme slowness).
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