Dual monitor setup issues related to resolution

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1

I am running Tumbleweed and have 2 monitors in my setup.

  1. Dell U3011, resolution 2560x1600 (16:10) Primary monitor
  2. Dell G3223Q, resolution 3840x2160 (16:9)

Graphics Platform : Wayland

The issue that I am facing is that if I keep the max resolution of monitor # 2 and keep the scaling at 100%, the text is very small on this monitor.

If I change the scaling to 125% or 150% on monitor #2, the text becomes small on monitor #1.

The only way to make them work together is if I lower the resolution of monitor #2 to 2560x1440, but then the “crispness” of the text suffers on monitor #2.

Is it possible to have the monitors working at their max resolutions without other related issue?

2

@michaels02 You neglected to indicate Desktop Environment?

3

My bad… Sorry. It is KDE.

4

Please share your graphics hardware/environment details and display config output:
inxi -Gaz
kscreen-doctor -o
That might help others to advise further here.

5

If you also adjust the scaling to suit on monitor #1, can you achieve an acceptable result on both displays?

6

Graphics:
Device-1: Intel HD Graphics 630 vendor: Dell driver: i915 v: kernel
arch: Gen-9.5 process: Intel 14nm built: 2016-20 ports: active: DP-1,DP-2
empty: DP-3, HDMI-A-1, HDMI-A-2, HDMI-A-3 bus-ID: 00:02.0
chip-ID: 8086:5912 class-ID: 0300
Device-2: Advanced Micro Devices [AMD/ATI] Cape Verde PRO / Venus LE
Tropo PRO-L [Radeon HD 8830M R7 250 M465X] vendor: Dell driver: radeon
v: kernel alternate: amdgpu arch: GCN-1 code: Southern Islands
process: TSMC 28nm built: 2011-20 pcie: gen: 3 speed: 8 GT/s lanes: 16
ports: active: none empty: DP-4,DP-5,DVI-I-1 bus-ID: 01:00.0
chip-ID: 1002:682b class-ID: 0300 temp: 49.0 C
Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.6
compositor: kwin_wayland driver: X: loaded: modesetting unloaded: vesa
alternate: fbdev,intel dri: iris gpu: i915 d-rect: 6400x2160 display-ID: 0
Monitor-1: DP-1 pos: primary,left model: Dell U3011 serial:
built: 2011 res: mode: 2560x1600 hz: 60 scale: 125% (1.25) to: 2048x1280
dpi: 101 gamma: 1.2 size: 641x401mm (25.24x15.79") diag: 756mm (29.8")
ratio: 16:10 modes: max: 2560x1600 min: 720x400
Monitor-2: DP-2 pos: right model: Dell G3223Q serial: built: 2022
res: mode: 3840x2160 hz: 60 scale: 125% (1.25) to: 3072x1728 dpi: 138
gamma: 1.2 size: 708x399mm (27.87x15.71") diag: 813mm (32") ratio: 16:9
modes: max: 3840x2160 min: 720x400
API: EGL v: 1.5 hw: drv: intel iris drv: amd radeonsi platforms: device: 0
drv: radeonsi device: 1 drv: iris device: 2 drv: swrast gbm: drv: radeonsi
surfaceless: drv: radeonsi wayland: drv: iris x11: drv: iris
API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 25.0.2 glx-v: 1.4
direct-render: yes renderer: Mesa Intel HD Graphics 630 (KBL GT2)
device-ID: 8086:5912 memory: 15.24 GiB unified: yes display-ID: :1.0
API: Vulkan v: 1.4.309 layers: 1 device: 0 type: integrated-gpu name: Intel
HD Graphics 630 (KBL GT2) driver: N/A device-ID: 8086:5912
surfaces: xcb,xlib,wayland
Info: Tools: api: eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor wl: wayland-info
x11: xdpyinfo, xprop, xrandr

Output: 1 DP-1
enabled
connected
priority 2
DisplayPort
Modes: 1:2560x1600@60*! 2:1920x1440@60 3:1920x1200@60 4:1920x1080@60 5:1920x1080@60 6:1920x1080@60 7:1920x1080@60 8:1920x1080@60 9:1920x1080@60 10:1920x1080@50 11:1920x1080@50 12:1920x1080@24 13:1920x1080@24 14:1600x1200@60 15:1280x1024@75 16:1280x1024@60 17:1280x800@60 18:1152x864@75 19:1280x720@60 20:1280x720@60 21:1280x720@60 22:1280x720@50 23:1024x768@75 24:1024x768@60 25:800x600@75 26:800x600@60 27:720x576@50 28:720x576@50 29:720x480@60 30:720x480@60 31:720x480@60 32:720x480@60 33:720x480@60 34:640x480@75 35:640x480@60 36:640x480@60 37:640x480@60 38:720x400@70
Geometry: 0,0 2048x1280
Scale: 1.25
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: Automatic
HDR: incapable
Wide Color Gamut: incapable
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: unsupported
Output: 2 DP-2
enabled
connected
priority 1
DisplayPort
Modes: 39:3840x2160@60*! 40:3840x2160@60 41:3840x2160@60 42:3840x2160@50 43:3840x2160@30 44:3840x2160@30 45:3840x2160@25 46:3840x2160@24 47:3840x2160@24 48:2560x1440@144 49:2560x1440@120 50:2560x1440@60 51:1920x1200@60 52:1920x1080@144 53:1920x1080@120 54:1920x1080@120 55:1920x1080@120 56:1920x1080@100 57:1920x1080@60 58:1920x1080@60 59:1920x1080@60 60:1920x1080@50 61:1920x1080@30 62:1920x1080@30 63:1920x1080@25 64:1600x1200@60 65:1680x1050@60 66:1600x900@60 67:1280x1024@75 68:1280x1024@60 69:1280x800@60 70:1152x864@75 71:1280x720@60 72:1280x720@60 73:1024x768@75 74:1024x768@60 75:800x600@75 76:800x600@60 77:720x576@50 78:720x480@60 79:720x480@60 80:640x480@75 81:640x480@60 82:640x480@60 83:640x480@60 84:720x400@70
Geometry: 2048,0 3072x1728
Scale: 1.25
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: Automatic
HDR: disabled
Wide Color Gamut: disabled
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: unsupported

7

…and did you try scaling the displays individually?

8

Thanks. I scaled both of them to 125% and that looks to be okay.

Having different scaling on each is not really giving me the optimal results.

Thanks for pointing me in the right direction.

9

Glad to have been of guidance.

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