https://github.com/louzkk/edid-overclock
Script to install custom EDID firmware for monitor overclocking on Linux (systemd-boot/GRUB)
https://github.com/louzkk/edid-overclock
edid grub hz linux linux-kernel linux-shell mkinitcpio monitor overclock overclocking wayland
Last synced: 21 days ago
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Script to install custom EDID firmware for monitor overclocking on Linux (systemd-boot/GRUB)
- Host: GitHub
- URL: https://github.com/louzkk/edid-overclock
- Owner: louzkk
- Created: 2026-05-08T01:37:28.000Z (about 1 month ago)
- Default Branch: main
- Last Pushed: 2026-05-09T01:11:35.000Z (about 1 month ago)
- Last Synced: 2026-05-09T02:38:50.030Z (about 1 month ago)
- Topics: edid, grub, hz, linux, linux-kernel, linux-shell, mkinitcpio, monitor, overclock, overclocking, wayland
- Language: Shell
- Homepage:
- Size: 138 KB
- Stars: 1
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# EDID-Overclock
**Custom EDID firmware profile**
[](https://github.com/louzkk/edid-overclock)
[](LICENSE)
[](https://discord.gg/QJPdw2UrVt)
[](https://github.com/louzkk/edid-overclock/releases)
A shell script that installs a custom EDID firmware on Linux, enabling monitor refresh rate overclocking beyond what the panel advertises. Handles initramfs embedding, kernel parameter injection, and bootloader configuration automatically.
**Tested on my PC:** `UHD 620`, `BOE 1920x1080 60hz` and `CachyOS (Wayland)`
**Requirements:** `mkinitcpio`, `wxEDID` and `GRUB`.
its not that hard, I promise
---
## Guide
> Replace `75`, `edid_75hz.bin` `card-eDPI-1` and `eDP-1` with your target refresh rate/resolution, file name and output name.
**1. Find your display output name**
```bash
ls /sys/class/drm/
```
**2. Extract your current EDID**
```bash
cat /sys/class/drm/card1-eDP-1/edid > edid_original.bin
```
**3. Calculate the new timings**
```bash
cvt 1920 1080 75
```
**4. Edit the EDID in wxEDID**
Open `edid_original.bin` in wxEDID and find the DTD you want to replace (e.g. the 48Hz one). Set the new timings from the cvt output. Mind sync polarity: CVT outputs `-hsync +vsync`, make sure wxEDID matches that. Save as `edid_75hz.bin`.
**5. Install**
```bash
chmod +x edid-apply.sh
sudo ./edid-apply.sh install edid_75hz.bin eDP-1
```
If your bootloader wasn't detected
```bash
sudo ./edid-apply.sh install edid_75hz.bin eDP-1 --bootloader systemd-boot
```
**6. Reboot and verify**
```bash
kscreen-doctor -o
```
Your target refresh rate/resolution should now appear in the list.
---
## Removing
```bash
sudo ./edid-apply.sh remove edid_75hz.bin
```
---
## Notes
- Black screens are usually caused by wrong sync polarity, not the pixel clock being too high — eDP panels often accept much higher clocks than their EDID advertises
- If you get a black screen after rebooting, edit the bootloader entry at boot time (press `e` in GRUB), remove the `drm.edid_firmware=...` parameter and boot. Then run the remove command above
- This script modifies the EDID reported to your system. **Use at your own risk.** I'm not responsible for any instability or damage.
---