I have a window (QMainWindow or QDialog) with a QGLWidget. If I call hide() and then show() on the window I will get the following error when running in an X windows system (remote: linux server, mac client):
X Error: GLXBadContext 147
Extension: 146 (Uknown extension)
Minor opcode: 5 (Unknown request)
Resource id: 0xa0001c
(and nothing is rendered)
Any ideas what could cause this behavior?