Hi everybody, I'm having a resolution issue trying to connect an external monitor to a laptop.
Laptop: ThinkPad X220T External Monitor: Samsung SyncMaster S20A300B Debian: 11.8 (bullseye), updated Connecting through laptop's VGA port (to VGA input in external monitor) everything works apparently normal except that I can't get the resolution right. Laptop goes at 1366x768, and monitor informs 1600x900 as optimal (which laptop's VGA-port should have no problem in providing, apparently[0]), but from xrandr that mode doesn't appears as automatically available. I've tried adding it by hand: $ cvt 1600 900 # 1600x900 59.95 Hz (CVT 1.44M9) hsync: 55.99 kHz; pclk: 118.25 MHz Modeline "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync $ xrandr --newmode "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync $ xrandr --addmode VGA-1 1600x900_60.00 $ xrandr --output VGA-1 --mode 1600x900_60.00 , but then the monitor informs it's receiving 1440x900, the GUI gets strangely distributed and image doesn't cover all of it (horizontally), while laptop's GUI suddenly extends beyond its display size. I've also tried with lower resolutions and, for instance, both 1440x768 and 1368x768 are informed by monitor as 1280x768 -but at least at 1368x768 both screens have same GUI distribution (consistent) except that monitor seems a little horizontally compressed... Any recommendation on how to make this work properly (I mean, to have full-surface image on monitor, without deformation, and at 1600x900)? Thanks a lot in advance! [0] https://support.lenovo.com/us/en/solutions/pd015807-detailed-specifications-thinkpad-x220-tablet
