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Dell Inspiron 24 5459 AIO
No non-native scaling ¹⁾

eDP

CRU: Create all resolutions under VTB-EXT (nothing else), export to .bin ²⁾
CVT-RB2 standard 78.5 Hz
GNOME on Wayland only presents 78.5Hz on 1080p ³⁾

sudo mkdir -p '/usr/lib/firmware/edid'

/usr/lib/firmware/edid/785-edp-vtbext.bin

Dracut

sudo -e '/etc/dracut.conf.d/99-hailrake.conf'

install_items+='/usr/lib/firmware/edid/785-edp-vtbext.bin'

Kernel parameter

drm.edid_firmware='eDP-1:edid/785-edp-vtbext.bin'

xorg.conf

1024×768 and lower blackscreen

Section "Monitor"
    Identifier "eDP1"
    Modeline "1920x1080_78.5" 176.00 1920 1928 1960 2000 1080 1107 1115 1121 +HSync -VSync
    Modeline "1280x720_78.5" 79.75 1280 1288 1320 1360 720 733 741 747 +HSync -VSync
    Option "PreferredMode" "1920x1080_78.5"
EndSection

# End

'/usr/bin/bash' -c "'/usr/bin/xrandr' --output 'eDP1' --set 'Broadcast RGB' 'Full' --set 'Colorspace' 'RGB_WIDE_FLOAT' --set 'scaling mode' 'Full aspect' --set 'max bpc' '12'"

HDMI-in

CRU

No Established resolutions
No Detailed resolutions
No Standard resolutions
1 Extension block (CTA-861)

CTA-861

Detailed resolutions

All CVT-RB2 standard
Refresh rate: 78.5

1920×1080
1280×720
1024×768
800×600
640×480

Data block

HDMI support

[x] Maximum TMDS clock: 340 MHz
Content types: [x] Game

¹⁾

4:3 resolutions like 800×600 get stretched

²⁾

CRU seemingly runs fine from wine with default-empty blocks; exported to .bin loads but still only presented 78.5Hz on 1080p GNOME/others untested

³⁾

not 720p/etc; no native/detailed resolution was specified in CRU EDID export

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