Thanks, Felix! On Thu Jul02'26 11:36:49AM, Felix Miata wrote: > From: Felix Miata <[email protected]> > Date: Thu, 2 Jul 2026 11:36:49 -0400 > To: [email protected] > Reply-To: Community support for Fedora users <[email protected]> > Subject: Re: OT: recommendations for a 2880x1800 external monitor? > > Ranjan Maitra composed on 2026-07-02 09:44 (UTC-0500): > > > Thank you to you and Barry. I actually found a monitor and hooked it up. > > Here is what I get: > > > > Monitor-1: HDMI-A-1 mapped: HDMI-1 model: Philips PHL 276E8V serial: 7263 > > built: 2019 res: mode: 3840x2160 hz: 60 scale: 100% (1) dpi: 163 gamma: > > 1.2 > > chroma: red: x: 0.647 y: 0.333 green: x: 0.302 y: 0.635 blue: x: 0.153 > > y: 0.055 white: x: 0.314 y: 0.329 size: 597x336mm (23.5x13.23") > > diag: 685mm (27") ratio: 16:9 modes: 3840x2160, 1920x2160, 2560x1440, > > 1920x1080... > > > How should I use xrandr on this? I guess I will be getting a black border > > on the left and right edges since the external monitor is set to be wider > > than the laptop screen. > > > I looked into arandr to see if I got any clues and get the following: > > > xrandr --output eDP-1 --primary --mode 2880x1800 --pos 0x0 --rotate normal > > --output DP-1 --off --output DP-2 --off --output HDMI-1 --mode 3840x2160 > > --pos 0x0 --rotate normal > > > However arandr does not have any option for scaling or aspect ratio on the > > external monitor. > > Simpler choices I suggest to try for mirroring the two: > > xrandr --output eDP-1 --mode 2560x1440 --pos 0x0 --output HDMI-1 --mode > 2560x1440 > --pos 0x0 > > xrandr --output eDP-1 --mode 2880x1800 --pos 0x0 --output HDMI-1 --mode > 3840x2160 > --scale-from 2880x1800 > > xrandr --output eDP-1 --mode 2880x1800 --pos 0x0 --output HDMI-1 --mode > 3840x2160 > --scale .75x.75 > > xrandr --output eDP-1 --mode 2880x1800 --pos 0x0 --output HDMI-1 --mode > 3840x2160 > --scale 1.333x1.333 > > I always forget which direction scaling works, so one of the last two will be > clearly wrong. Also you'll likely find it desirable or necessary to adjust the > scale value for vertical to account for the difference in the two displays > native > aspect ratios. Later I may find time to try to emulate using 16:9 2560x1440 > with > 16:10 1920x1200 displays if you haven't solved to your satisfaction. >
I now can not recall about the first one, but the second and third do the same thing. Which likely makes sense. However, both screens are completely filled (how is this possible?) and what is really bad about the HDMI-1 screen is that it does not display new windows or the mouse cursor or even when you write on an existing terminal then the script gets messed up (I do not quite know how to explain this) to be unreadable. The eDP-1 screen looks fine to me. So, I am missing something. Thanks very much again! Best wishes, Ranjan -- _______________________________________________ users mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected] Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new
