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Ubuntu AMD no overscan / underscan fix

Ubuntu AMD no overscan / underscan fix
I have a monitor with a bunch of dead pixels at the left hand side and the bottom affecting maybe 5% of the screen. Rather than throw the monitor away I usually change the underscan so I can skip the dead pixels. Ubuntu 16.04 decided that it would no longer play nice with the official AMD drivers for my graphics... Read More

ATI R9 270x (and R9 295X2,R9 290X,R9 290,R9 285,R9 280X,R9 280,R9 270X,R9 270) enable audio over dvi connection

ATI R9 270x (and R9 295X2,R9 290X,R9 290,R9 285,R9 280X,R9 280,R9 270X,R9 270) enable audio over dvi connection
As standard you do not get audio over the DVI port on R9 devices. I got audio working correctly over DVI using an old DVI to HDMI converter that shipped with one of my previous ATI graphics cards, the HD4850x2. They are still floating around on ebay, and look like this: Just use a standard HDMI lead to your monitor... Read More

Lissajous Patterns on an Oscilloscope using Silego GreenPAK4 Development Kit and SLG46620V

Lissajous Patterns on an Oscilloscope using Silego GreenPAK4 Development Kit and SLG46620V
Introduction What are Lissajous Patterns? Lissajous Patterns are the result of two sine waves controlling the X and Y axes of an oscilloscope. Lots of science fiction movies will show Lissajous Patterns on oscilloscopes as it is a very impressive thing to display. https://en.wikipedia.org/wiki/Lissajous_curve What is an Oscilloscope? An oscilloscope is an electronic device used for viewing waveforms or electronic... Read More