You CAN'T use FKMS (dtoverlay=vc4-fkms-v3d) or LEGACY (no vc4-xx in config.txt) with Bookworm as it requires KMS.I made some experiments.
I can disable dtoverlay=vc4-kms-v3d, then overscan settings in config.txt are working. But then, even the video in vlc is not smooth. I tried to add dtoverlay=vc4-fkms-v3d instead of dtoverlay=vc4-kms-v3d, but this doesn't help at all. In RetroPie based on Buster fkms is enabled for Pi4 and everything is working good (overscan settings are working, video in vlc is smooth and, it seems, even acceleration in games is working).
So, as I understand, I can't change picture size in Bookworm, without losing functionality. On the other hand, most of the devices connected via DVI / HDMI can't change picture size. So, in new version of the OS Raspberry just acts like most of the devices.
your command is incorrect! fixed the typo below
Code:
video=HDMI-A-1:1024x768M@60D,margin_left=40,margin_right=0,margin_top=0,margin_bottom=0Code:
video=HDMI-A-1:1440x900M@60D,margin_left=0,margin_right=0,margin_top=75,margin_bottom=75Statistics: Posted by aBUGSworstnightmare — Fri Feb 23, 2024 1:36 pm