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, 20232 yr by Rein
change of expression

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

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, 20232 yr by Rein
correction

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.

6 hours ago, Rein said:

Every few seconds the display goes blank momentarily.

Sounds like bad hdmi cable. Try using a different cable

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 😊.