$ qtcreator -graphicssystem opengl using visual class 4, id 112 hijackWindow() context created for QScrollBar(0xa7200a8) 1 Created Window Surface FBO QSize(15, 64) with samples 1 hijackWindow() context created for QScrollBar(0xa726218) 1 Created Window Surface FBO QSize(15, 64) with samples 1 hijackWindow() context created for Core::Internal::MainWindow(0x9caa278) 1 Created Window Surface FBO QSize(1680, 1018) with samples 1 Segmentation fault $ fontmatrix -graphicssystem opengl using visual class 4, id 112 Segmentation fault $ VirtualBox -graphicssystem opengl Segmentation fault I'm using: $ lspci | grep Radeon 04:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 4770 [RV740] $ rpm -q xorg-x11-drv-ati xorg-x11-drv-ati-6.14.3-3.20111125git534fb6e41.fc16.i686 Please tell me if I can provide any more useful info.
"-graphicssystem opengl" is documented (by upstream) as being experimental and broken.