On 4/9/22 4:20 PM, Roger Heflin wrote:
> you need to look for the section that says Screen #0/#1 and the next few
> lines will the the stuff you care about (size/dpi).
>
> On Sat, Apr 9, 2022 at 11:37 AM home user <mattisonw@comcast.net
> <mailto:mattisonw@comcast.net>> wrote:
>
>     On 4/9/22 10:00 AM, Roger Heflin wrote:
>      > Check that both monitors are running the same resolution.
>
>     How do I do that?
>
>      > Also run "xdpyinfo" (rpm is xdpyinfo if you don't have it
>     installed, I
>      > don't know if this tool works on wayland or not) and see if the
>     listed
>      > size of the screens and dpi is similar on both monitors.   I have
>     seen
>      > some devices that the EDID info is wrong and because of that it
>      > calculates the DPI wrong and adjusts sizes based on that data.  MIne
>      > produces output like this:
>      >
>      > Screen #0:
>      >    dimensions: 3840x2160 pixels (1016x571 millimeters)
>      >    resolution: 96x96 dots per inch
>      >
>      > Mine is actually 940mm x 530mm so EDID lists my monitor as about 8%
>      > bigger than it really is
>      >
>      > Windows may have a monitor device table that it uses that has
>     correct
>      > values in it, or windows 7 may not be playing any DPI scaling games.
>
>     Yeow!  I get hundreds of line of output!  I don't see anything in the
>     man page for paring this down.  How do I pare down the output?  The
>     output looks identical regardless of which monitor I run the command on.

Here we go:
-----
bash.1[~]: xdpyinfo | grep dimensions
   dimensions:    4480x1440 pixels (1185x381 millimeters)
bash.2[~]: xdpyinfo | grep resolution
   resolution:    96x96 dots per inch