# Raspberry Pi 5 will not ignore EDID
**URL:** https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556
**Category:** Troubleshooting
**Tags:** rpi-5
**Created:** [20 January 2025 20:00 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556 "2025-01-20T20:00:19Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [20 January 2025 20:00 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/1 "2025-01-20T20:00:19Z")
#### Required Information
- DietPi version
```auto
G_DIETPI_VERSION_CORE=9
G_DIETPI_VERSION_SUB=8
G_DIETPI_VERSION_RC=0
G_GITBRANCH='master'
G_GITOWNER='MichaIng'
```
- Distro version
`bookworm 0`
- Kernel version
`Linux A3ProdEngTV 6.6.62+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.62-1+rpt1 (2024-11-25) aarch64 GNU/Linux`
- Architecture
`arm64`
- SBC model
`RPi 5 Model B (aarch64)`
- Power supply used
`Official Raspberry Pi Adapter`
- SD card used
`PNY Elite`
> Note: I revised the description to more accurately reflect the problem I am facing.
According to the official [documentation](https://www.raspberrypi.com/documentation/computers/config_txt.html#generic-display-options), the Raspberry Pi 5 does not parse the EDID of any connected HDMI device by default. I don’t know if that only applies when the official Raspberry Pi OS is used, but I would assume the same is _supposed_ to be true with DeitPi as well since it is based on the official image. However, despite what the docs say, my Raspberry Pi 5 _does_ parse the EDID even when `disable_fw_kms_setup=1` is added to config.txt file.
This has presented an issue for me with one of my deployments. I have a 4K TV (TCL 55Q650F) that, according to the Pi, advertises 1920x1080@60 as its preferred mode. As a result, the Pi _will not_ display its output in 4K with this TV but is happy to do so with other 4K TVs I have.
I have Chromium installed in use with the autostart feature. No desktop.
This is what I have tried so far, but has not worked:
- Add `video=HDMI-A-1:3840x2160M@30D` to `/boot/firmware/cmdline.txt`
- Add `disable_fw_kms_setup=1` to `/boot/firmware/config.txt`
- I also tried `=0`
- `framebuffer_width=3840` and `framebuffer_height=2160` in `/boot/firmware/config.txt`
---
### Author:  [@Jappe](https://dietpi.com/forum/u/Jappe)
#### Post date: [21 January 2025 08:24 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/3 "2025-01-21T08:24:45Z")
Did you try to change the resolution with`dietpi-config` already?
---
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [22 January 2025 13:01 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/4 "2025-01-22T13:01:41Z")
I have not, since there are no 4K resolution options there.
---
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [22 January 2025 14:46 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/5 "2025-01-22T14:46:43Z")
Here’s a bit more information…
`kmsprint -m` seems to indicate that the display’s "preferred’ mode is 1080P @ 60Hz and only supports 4K @ 30Hz. I’m guessing that its reverting to 1080 because the Pi is trying to push 4K @ 60?
```bash
$ kmsprint -m
Connector 0 (32) HDMI-A-1 (connected)
0 1920x1080@60.00 148.500 1920/88/44/148/+ 1080/4/5/36/+ 60 (60.00) P|D
1 4096x2160@24.00 297.000 4096/1020/88/296/+ 2160/8/10/72/+ 24 (24.00) D 256:135
2 4096x2160@23.98 296.703 4096/1020/88/296/+ 2160/8/10/72/+ 24 (23.98) D 256:135
3 3840x2160@30.00 297.000 3840/176/88/296/+ 2160/8/10/72/+ 30 (30.00) U|D 16:9
4 3840x2160@29.97 296.703 3840/176/88/296/+ 2160/8/10/72/+ 30 (29.97) D 16:9
5 3840x2160@25.00 297.000 3840/1056/88/296/+ 2160/8/10/72/+ 25 (25.00) D 16:9
6 3840x2160@24.00 297.000 3840/1276/88/296/+ 2160/8/10/72/+ 24 (24.00) D 16:9
7 3840x2160@23.98 296.703 3840/1276/88/296/+ 2160/8/10/72/+ 24 (23.98) D 16:9
...
```
I added `video=HDMI-A-1:3840x2160M@30D` to `/boot/firmware/cmdline.txt` . . . No luck.
---
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [23 January 2025 21:02 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/6 "2025-01-23T21:02:13Z")
I loaded a SD card with the official Raspberry Pi OS (with desktop) and was able to set the resolution to 3840x2160 @ 30Hz and 4096x2160 @ 24Hz without issue. I was also able to do the same with DietPi and the LXDE desktop.
I thought that saving the display settings and then rebooting with Chromium autostart might be the fix, but it was not. ☹
---
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [23 January 2025 22:06 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/7 "2025-01-23T22:06:17Z")
Here’s another update . . . Finally landed on a workaround/temp fix.
I did this remotely via SSH, which is why I specified the display environment variable.
```auto
$ export DISPLAY=:0
$ xrandr --output HDMI-1 --mode 3840x2160
```
I’m guessing that this won’t persist after a reboot so I’m thinking about putting the `xrandr` command at the end of the autostart script.
---
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [3 February 2025 13:17 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/8 "2025-02-03T13:17:44Z")
FYI, exporting the DISPLAY variable and setting the resolution with `xrandr` in `chromium-autostart.sh` didn’t apply the resolution settings after rebooting. I’m reluctant to mark my comment as the “solution” . . .
---
### Author:  [@Jappe](https://dietpi.com/forum/u/Jappe)
#### Post date: [3 February 2025 17:26 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/9 "2025-02-03T17:26:15Z")
so the chromioum-autostart is executed on every boot / start of chromium, so the export does not survive the reboot?
Add it to your bashrc or bash\_profile is maybe a solution?
---
### Author:  [@rmscode](https://dietpi.com/forum/u/rmscode)
#### Post date: [3 February 2025 18:15 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/10 "2025-02-03T18:15:33Z")
Yes! I forgot about `.bashrc` . . . That worked, thank you.
For the record, I added both `export DISPLAY=:0` and `xrandr --output HDMI-1 --mode 3840x2160`.
---
### Author:  [@system](https://dietpi.com/forum/u/system)
#### Post date: [4 May 2025 18:16 UTC](https://dietpi.com/forum/t/raspberry-pi-5-will-not-ignore-edid/22556/11 "2025-05-04T18:16:24Z")
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