glxspheres64 is using 100% of the CPU. callgrind shows all of this is spent in:
100% intelBitmap |- 100% _swrast_Bitmap |- 50% intelSpanRenderStart |- 50% intelSpanRenderFinish I'm a bit worried about "_swrast_Bitmap". Sounds like it's rendering in software for some reason. Although glxspheres64 says: Polygons in scene: 62464 Visual ID of window: 0x99 Context is Direct OpenGL Renderer: Mesa DRI Intel(R) Sandybridge Desktop 3.464074 frames/sec - 3.865907 Mpixels/sec -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/944627 Title: glxspheres runs very slowly in Precise (only 2-3 FPS) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/944627/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs