I have a Zynq that is colossal overkill for this task, but I can't get the damn tools to co-operate.

(I want to start with the Zynq because why not)

Vivado (2018.1) on Linux (Ubuntu Gnome) crashes at the drop of a hat. Right click, crash. Hover over a button, crash. I guess it's some bug in its GUI. Any suggestions welcome...

I do have an older Spartan chip but I can't remember how to drive the old Xilinx ISE, maybe I should give Altera or Lattice a go. Or some good old hard wired logic.

For my reference:

#
# An unexpected error has occurred (11)
#
Stack:
/opt/Xilinx/Vivado/2018.1/tps/lnx64/jre/lib/amd64/server/libjvm.so(+0x923da9) [0x7f62e7182da9]
/opt/Xilinx/Vivado/2018.1/tps/lnx64/jre/lib/amd64/server/libjvm.so(JVM_handle_linux_signal+0xb6) [0x7f62e71893f6]
/opt/Xilinx/Vivado/2018.1/tps/lnx64/jre/lib/amd64/server/libjvm.so(+0x9209d3) [0x7f62e717f9d3]
/lib/x86_64-linux-gnu/libc.so.6(+0x37140) [0x7f6325935140]
/opt/Xilinx/Vivado/2018.1/tps/lnx64/jre/lib/amd64/libawt_xawt.so(+0x42028) [0x7f62c8320028]
/opt/Xilinx/Vivado/2018.1/tps/lnx64/jre/lib/amd64/libawt_xawt.so(+0x42288) [0x7f62c8320288]
/opt/Xilinx/Vivado/2018.1/tps/lnx64/jre/lib/amd64/libawt_xawt.so(Java_sun_awt_X11_XRobotPeer_getRGBPixelsImpl+0x17c) [0x7f62c831867c]
[0x7f62d72224cf]