Lmst

Modifying an #HDMI dummy plug’s #EDID using a #RaspberryPi

https://www.downtowndougbrown.com/2025/06/modifying-an-hdmi-dummy-plugs-edid-using-a-raspberry-pi/

Modifying an HDMI dummy plug's EDID using a Raspberry Pi

https://www.downtowndougbrown.com/2025/06/modifying-an-hdmi-dummy-plugs-edid-using-a-raspberry-pi/

#HackerNews #ModifyingHDMI #EDID #RaspberryPi #TechDIY #HomeAutomation

'bias literacy' - recognize and change our own biases - Eddy Ng #edid (related: can Columbia University happen in Canada? We shouldn't be complacent)

Any action that denies the humanity of others is wrong. - Andrea Davis #edid

How to continue in difficult times: Remain true to yourself, remind those close to you that you live them, and continue to do the work. Generations change, and our children will live in. - Kahente Horn-Miller #edid

Decolonization: from what, to what, and how? (EDID on University Campuses conference, Carleton U #edid)

@benbrown depends on your workflow.

Personally, I have a dedicaded #HDMI #Recorder that does #1080p30, but I'd recommend to choose something that uses #USB-#UVC.

You can even use a #RaspberryPi with the #HDMI2CSI adapter board.

OFC you propably need a splitter so the sending device gets a proper #EDID and doesn't negotiate the wron resolution.

Don't forget that cracking #HDCP is a legal no-no, but there's no way for anyone to find out...

#NotLegalAdvice

Okay, how do we override just the broken EDID without flashing?

Not the kernel way as that applies to the whole port and sometimes we switch displays.

And no flashing since we aren't confident yet on flashing the thing (we don't know if it's the HDMI to DVI-D adapter).

We know the monitor as of now sends the same broken edid, so it's possible to identify that exact monitor by EDID.

#EDID #AOC #919Vz #AOC919Vz #Monitor #Display #DVI #DVI_D #DVID

Does anyone have the EDID of the DVI-D port of the AOC 919Vz?

#EDID #AOC #919Vz #AOC919Vz #Monitor #Display #DVI #DVI-D #DVID

Hab noch mal versucht den wiederzu beleben, kann aber vom PC aus nicht die EDID neu schreiben also hoffnungslos mit EPROM-Brenner vielleicht aber das macht keinen sinn mehr bei einen Monitor der 2010 gebaut wurde, man könnte noch das über den Kernel machen also dem System eine EDID vorgaukeln.

Allerdings hab ich einige tolle Quellen für euch:

Sammlung von #EDID Backups: https://github.com/linuxhw/EDID/tree/master
Bischen i2c-tool voodu: https://blog.voodoo-arts.net/content/edid-informationen-mancher-monitore-sind-falsch-das-kann-man-aber-%C3%A4ndern

Amazingly, on the rooted #android phone, #pinxi can now also show complete monitor information, aka the screen, which I was really surprised by. I did not expect phone screens to return #EDID data, but they do, at least in this case.

As is often the case, right when I think everything is going to settle down, I get a good issue, a good dataset, or find a key bit of missing info.

Refactoring to handle the port ID mapping was tricky but not too hard Now the old hack is just a fallback.

I do hate #Hardware.
A while ago I already looked for (but didn't find) a #USB-C #KVM #switch for 4 inputs that allows for 5k graphics. (By now 3 different PC/laptops would be enough to get switched).

It seems one can ONLY find some that are 2-port and/or do max. 4k.

So I had to step down and now have a 4-port #HDMI KVM switch.
Which, kind-of, works. It's *not* exactly the fastest (5 to 8 seconds until things are usable after a switch). And it doesn't have anything that stores #EDID, so when I switch, the other laptops think the display has gone away and reorder all windows. GAH

But oh, there are edid emulators for HDMI out there, so one of them per cable and done, it would seem.

Not so. They all only support 4k displays. WTF? WHY?

I only want either a nice USB-C kvm switch doing 3 or 4 inputs AND supporting 5k displays, or at least HDMI edid emulators supporting 5k displays.

Meh. Come on, companies, I am willing to hand you money, produce something useful for a change, please.

🌘 破解LG顯示器的EDID · GitHub
➤ 如何解決在Linux上使用LG ULTRAGEAR顯示器時遇到的問題
✤ https://gist.github.com/kj800x/be3001c07c49fdb36970633b0bc6defb
這篇文章介紹了作者如何解決在Linux上使用LG ULTRAGEAR顯示器時遇到的問題。作者通過研究EDID，發現顯示器可能向操作系統報告了錯誤的模式，並提供瞭解決方案。
+ 這篇文章對於使用LG顯示器的人來說非常有用，尤其是在Linux上使用時遇到問題的人。
+ 研究EDID是一個很好的解決方案，這篇文章提供了很好的參考資料。
#LG顯示器 #EDID #Linux

Finally releasing my EDID parser and assembler to the public.

https://codeberg.org/ral/pasedid

These are two simple tools. The first parses the binary blob into a yaml file. You can then adapt this file to your needs and assemble it back into a binary. The binary can then be flashed on suitable hardware.

I could not have done this without Rust and the awesome modern tooling around it!

https://crates.io/crates/pasedid

#edid #video #voc #rustlang