SSD1306 skips every other line

In case there are others who (like me) got stumped by this these settings worked for me by referencing the arduino code @Gordon refers to above (thanks Gordon!)

var initCmds = new Uint8Array([ 0xAe, // disp off
             0xD5, // clk div
             0x80, // suggested ratio
             0xA8, 0x1F, // set multiplex: 0x1F for 128x32, 0x3F for 128x64
             0xD3,0x0, // display offset
             0x40, // start line
             0x8D,extVcc?0x10:0x14, // charge pump
             0x20,0x0, // memory mode
             0xA1, // seg remap 1 
             0xC8, // comscandec
             0xDA,0x02, // set compins - use 0x12 for 128x64
             0x81,extVcc?0x9F:0xCF, // set contrast
             0xD9,extVcc?0x22:0xF1, // set precharge
             0xDb,0x40, // set vcom detect
             0xA4, // display all on
             0xA6, // display normal (non-inverted)
             0xAf // disp on
            ]);