On Thu Jul02'26 11:05:47AM, Patrick O'Callaghan wrote:
> From: Patrick O'Callaghan <[email protected]>
> Date: Thu, 02 Jul 2026 11:05:47 +0100
> To: [email protected]
> Reply-To: Community support for Fedora users <[email protected]>
> Subject: Re: OT: recommendations for a 2880x1800 external monitor?
>
> On Wed, 2026-07-01 at 18:46 -0500, Ranjan Maitra via users wrote:
> > On Wed Jul01'26 10:08:42PM, Patrick O'Callaghan wrote:
> > > From: Patrick O'Callaghan <[email protected]>
> > > Date: Wed, 01 Jul 2026 22:08:42 +0100
> > > To: [email protected]
> > > Reply-To: Community support for Fedora users
> > > <[email protected]>
> > > Subject: Re: OT: recommendations for a 2880x1800 external monitor?
> > >
> > > On Wed, 2026-07-01 at 15:31 -0500, Ranjan Maitra via users wrote:
> > > > > Well, first approach would be to look up what modes your
> > > > > graphics
> > > > > card
> > > > > supports.
> > > >
> > > > I am sorry, but do I figure this out?
> > >
> > > Run 'inxi -G --edid' to get information on the GPU and the modes
> > > the
> > > current monitor supports.
> >
> > Thank you! Don't I have to actually get the monitor to get this
> > information?
> >
>
> It looks like it. I had expected inxi to show the modes the GPU could
> offer, but it apparently only shows the ones actually available on the
> current monitor:
>
> > modes: 2880x1800
>
> which isn't much help. You'd need to attach an external monitor to see
> anything different. However as Barry says the online info for any
> monitor you might consider should have this data, and in most cases you
> can download the manual to check.
>
> poc
Thank you to you and Barry. I actually found a monitor and hooked it up. Here
is what I get:
inxi -G --edid Graphics:
Device-1: Intel Core Ultra 200V Series Processors Arc Graphics 130V/140V GPU
vendor: Dell driver: xe v: kernel arch: Xe2 process: TSMC n3 (3nm)
built: 2024+ ports: active: HDMI-A-1,eDP-1 empty: DP-1,DP-2
bus-ID: 00:02.0 chip-ID: 8086:64a0 class-ID: 0300
Display: x11 server: X.Org v: 21.1.23 driver: X: loaded: modesetting
alternate: fbdev,vesa dri: iris gpu: xe display-ID: :0.0 screens: 1
Screen-1: 0 s-res: 3840x2160 s-dpi: 96 s-size: 1013x570mm (39.88x22.44")
s-diag: 1162mm (45.76")
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, 1680x1050, 1280x1024, 1440x900, 1280x960, 1280x720, 1024x768,
832x624, 800x600, 720x576, 720x480, 640x480, 720x400
EDID-Warnings: 1: parse_edid: unhandled CEA mode 93 2: parse_edid:
unhandled CEA mode 94 3: parse_edid: unhandled CEA mode 95 4: parse_edid:
unhandled CEA mode 96 5: parse_edid: unhandled CEA mode 97
Monitor-2: eDP-1 pos: primary model: LG Display 0x07a0 built: 2025 res:
mode: 2880x1800 hz: 60 scale: 100% (1) dpi: 242 gamma: 1.2 chroma: red:
x: 0.690 y: 0.310 green: x: 0.235 y: 0.725 blue: x: 0.137 y: 0.043 white:
x: 0.314 y: 0.329 size: 302x189mm (11.89x7.44") diag: 356mm (14")
ratio: 16:10 modes: 2880x1800
EDID-Warnings: 1: parse_edid: unknown flag 0 2: parse_edid: unknown tag
112
API: OpenGL v: 4.6 vendor: intel mesa v: 26.1.3 glx-v: 1.4 es-v: 3.2
direct-render: yes renderer: Mesa Intel Graphics (LNL) device-ID: 8086:64a0
memory: 30.18 GiB unified: yes
Info: Tools: api: glxinfo x11: xdriinfo, xdpyinfo, xprop, xrandr
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.
There appear to be two answers here:
https://unix.stackexchange.com/questions/220387/how-to-set-scaling-mode-for-external-displays-on-intel-gpu#220388
The second (non-accepted) answer appears to me to be more informative, but is
this the right thing to do, and then run the xrandr as an executable script?
Many thanks again, and best wishes,
Ranjan
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