I have an old hp monitor (With VGA input) that I've connected to my dell laptop through an HDMI-to-VGA adapter. In my display settings, I have "Extend these screens" selected. But the old hp monitor is showing "Input Not Supported".

  • Have you checked, which screen resolutions the HP monitor can display, and made sure, you chose one of those in the display settings? With many HDMI/VGA adapters this information can ot be automatically retrieved by the OS. Nov 21, 2020 at 10:30
  • google.com/…
    – qsaso
    Nov 21, 2020 at 10:38
  • 1440*900 but in this resolution i can't even duplicate. i have changed to 1280*sth and that too only duplicates. it doesn't extend. i have tried with all possible resolutions as well. it didn't help.
    – qsaso
    Nov 21, 2020 at 10:39
  • That's fine - but did you chose 1440x900@75 as the resolution for this monitor in the display settings? Nov 21, 2020 at 10:40
  • Most likely you chose 1280x1024, which can't be displayed on a 1440x900 monitor. Nov 21, 2020 at 10:41


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