On 10.10 Yosemite, the Monitor I use (a 29inch 2560*1080 ultra wide display) looks fuzzy because the monitor is recognized as [TV Mode]. But I can solve this by replacing a file in Overrides folder (to do this you need to type cd Downloads ruby patch-edid.rb in Terminal.app) then replace the folder just downloaded with the original one. However on 10.11 El Capitan, this method no longer works. The monitor is in TV mode and everything looks weird. Anyone please?