Raspbian Bookworm and 7 inch hdmi monitor - small image

bgrattan

I am using an RPI 3B with Bookworm. What is the exact modification of config.txt? Everything to too small to read on the screen although it seems to be working correctly otherwise. Thanks
Bob Grattan

steven01

Hi Bob,

To address the small display issue on your Raspberry Pi 3B running Bookworm, edit /boot/config.txt to set the desired resolution. Uncomment or add hdmi_group=1 and hdmi_mode=16 for 1080p at 60Hz. Adjust framebuffer_width and framebuffer_height to match your screen's resolution. Reboot to apply changes.

bgrattan

Thanks, but I'm still having problems and everything is too small. The lines I have added don't seem to change the display. Here is my file:

pi-star@pi:/boot/firmware $ cat config.txt

# For more options and information see
# http://rptl.io/configtxt
# Some settings may impact device functionality. See link above for details

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

# Additional overlays and parameters are documented
# /boot/firmware/overlays/README

# Automatically load overlays for detected cameras
camera_auto_detect=1

# Automatically load overlays for detected DSI displays
display_auto_detect=1

# Automatically load initramfs files, if found
auto_initramfs=1

# Enable DRM VC4 V3D driver
#dtoverlay=vc4-fkms-v3d
max_framebuffers=2

# Don't have the firmware create an initial video= setting in cmdline.txt.
# Use the kernel's default instead.
disable_fw_kms_setup=1

# Run in 64-bit mode
arm_64bit=1

# Disable compensation for displays with overscan
disable_overscan=1

# Run as fast as firmware / board allows
arm_boost=1

[cm4]
# Enable host mode on the 2711 built-in XHCI USB controller.
# This line should be removed if the legacy DWC2 controller is required
# (e.g. for USB device mode) or if USB support is not required.
otg_mode=1

[cm5]
dtoverlay=dwc2,dr_mode=host

[all]
hdmi_group=1
hdmi_mode=16
hdmi_cvt 1024 600 3 0 0 0

The monitor is 7 inch HDMI display-H 1024 x 600
Cheers,
Bob

Jennie

Dear bgrattan,
In order To resolve the issue, could you please specify which product you purchased? Kindly provide the full product name, order number, and the purchasing platform/website/retailer.