I try hard to use firefox in headless mode for a python selenium project in freebsd. But firefox complains about GPUs and the absense of a X-Server, but this is a headless mode and crashes with a segmentation fault. Why does it want a GPU and X-Server in headless mode? Does not make sense. The output when i try to start is : " firefox --headless *** You are running in headless mode. Crash Annotation GraphicsCriticalError: |[0][GFX1-]: glxtest: Unable to open a connection to the X server (t=0.117314) [GFX1-]: glxtest: Unable to open a connection to the X server Crash Annotation GraphicsCriticalError: |[0][GFX1-]: glxtest: Unable to open a connection to the X server (t=0.117314) |[1][GFX1-]: No GPUs detected via PCI (t=0.117314) [GFX1-]: No GPUs detected via PCI Crash Annotation GraphicsCriticalError: |[0][GFX1-]: glxtest: Unable to open a connection to the X server (t=0.117314) |[1][GFX1-]: No GPUs detected via PCI (t=0.117314) |[2][GFX1-]: Failed to initialize shared font list, falling back to in-process list. (t=0.118314) [GFX1-]: Failed to initialize shared font list, falling back to in-process list. Segmentation fault (core dumped) firefox --headless " Can anyone help me? Best regards Josef