Acer XB270HU EDID fix for Linux

README.md

How to fix the default 640x480 resolution for linux for the Acer XB270HU by providing the EDID.

Works here on Linux Mint based on ubuntu.

1. Put the edid_monitor.bin in /lib/firmware/edid_monitor.bin

sudo nano /etc/initramfs-tools/hooks/edid

#!/bin/sh
PREREQ=""
prereqs()
{
    echo "$PREREQ"
}

case $1 in
prereqs)
    prereqs
    exit 0
    ;;
esac

. /usr/share/initramfs-tools/hook-functions
# Begin real processing below this line
mkdir -p "${DESTDIR}/lib/firmware/edid"
cp -a /lib/firmware/edid_monitor.bin "${DESTDIR}/lib/firmware/edid_monitor.bin"
exit 0

sudo chmod +x /etc/initramfs-tools/hooks/edid sudo update-initramfs -u -v

Next check the connected monitor ID (DP-1, DP-2 etc). for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n "${con#*/card?-}: "; cat $p; done

Add the edid to GRUB. Dont forget to change both monitor ID's sudo nano /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash drm.edid_firmware=DP-2:edid_monitor.bin video=DP-2:e"

sudo update-grub2 && reboot

edid_monitor.bin

Hi, I'm having this issue in Arch Linux, I have tried to replicate and adapt this solution to an arch based system by taking into consideration what I found here and here . But so far no luck.

Could you please provide more information into the steps to replicate this solution in an arch based system?

Sorry i have no knowledge of arch :(