Display settings on armbian (jammy) for raspi4

[Rein]

Hi, I've been trying out the jammy image for the raspberry pi. (Raspberry pi 4b)

I found a problem with the display settings.

I am using a Dell display of 1440x900

In the display settings it show the right monitor and the correct settings but the actual display shows a 5cm black band at the right-hand side.

And whatever I do makes no difference

Anyone have an answer?

 

Edited November 21, 2023 by Rein
change of expression

[Gunjan Gupta]

Could you try by setting disable_fw_kms_setup=1 in config.txt. If its there and already set to one, try setting it to 0

[Rein]

Hi Gunjan. The config.txt file does not have that line. I tried adding the line to the end of the config.txt file but this has not resolved the issue.

Thanks for your reply anyway.

Edited November 22, 2023 by Rein
correction

[Rein]

Here is  a photo of my problem.

The system has discovered the right display settings but the actual display is wrong.

Another thing that may be related (?) : Every few seconds the display goes blank momentarily.

[Gunjan Gupta]

6 hours ago, Rein said:

Every few seconds the display goes blank momentarily.

Sounds like bad hdmi cable. Try using a different cable

[Rein]

I am running a web page. I have a choice of a number of OSs on ssd cards (Debian , Ubuntu). They all work correctly on same video display and same cable 😊.