On Sat, 9 Apr 2022 at 21:03, home user <mattis...@comcast.net> wrote:
> 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 <mattis...@comcast.net > > <mailto:mattis...@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 > I think Xorg makes one big "window" large enough to include both monitors. 96 dpi is the default. I've only used dual monitors on Xorg a few times, and the monitors were identical. Maybe this will help: How to get a dual monitor setup with mixed DPI working on Xorg – The Midnight Sun (lguruprasad.in) <https://www.lguruprasad.in/blog/2020/01/13/how-to-get-a-dual-monitor-setup-with-mixed-dpi-working-on-xorg/> -- George N. White III
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