https://blog.wongcw.com/2020/09/17/%e5%ae%8f%e7%a2%81%e7%99%bc%e5%b8%83cb342ckc-omegaline%e5%af%ac%e5%b1%8f4k%e9%a1%af%e7%a4%ba%e5%99%a8%e6%94%af%e6%8c%8175hz-freesync/