So I have a monitor that is normally 1366x768 while going through my elgato in windows, but in elementary os it only gives options for (1080p, 720p and 1440x480). So i have tried to add 1366x768 as a custom resolution using the terminal, it can't add 1366x768, it adds 1368x768, which looks blurry on the monitor. I have added 1360x768, which is still blurry, but more tolerable than 1368x768. Is there a way to impose actual 1366x768 or am I stuck with 1360x768? And totally unrelated, but is there a way to completely disable the hdmi output on my graphics card (radeon hd6570) by modding the drivers?