The key is to get a readable test-display page (this ensures you will have a useable display in X). If you have a 'known-good' set of values that works in other pups, it should help and if those known-good values have worked without damage to your hardware or eyesight so far then you should be fine. Yes, ignore 'false' reports if they happen (say you've edited xorg.conf h&v refresh rates and gotten a readable test-display page on retest .. then after you exit that page, xorg gives a 'false report'? go right ahead and finish
![Smile :)](./images/smilies/icon_smile.gif)
Editing xorg.conf works well for fine-tuning values, but 'Tweak'ing is okay if it gives you a readable test-display page. Yes, xorg is conservative when it says may not be okay for card/display (the okay settings are the basic starting point). By the way, your English is pretty good
![Very Happy :D](./images/smilies/icon_biggrin.gif)