> $ cat /var/log/Xorg.0.log | grep Modeline Card: XFX Radeon HD 5550 (or 0x68da) Screen: LG Flatron E2240S Setting everything at 1920x1080 (native): I saw a double divided image full of scanlines (and an out-of-bounds mouse pointer) Setting everything at 1280x720: Horizontal scaling seems to work, but not vertical one. I saw a "black box" in a bottom of screen (which is a boot screen-part unload) It seems that setting any value (h_sync_start for example) don't change the final results nor setting B_POSITIVE_HSYNC flag. I suggest read EDID code from Xorg.log, a input area could be a good idea Keep up the good work, as always!! -- Michael