Setting the Screen Resolution of your Raspberry Pi

Hi!

I can't get 1080p 60Hz using hdmi_force_hotplug option.

I have two Raspberry Pi 4 and want to turn they on while disconnected from TV/monitor.

When I connect either one to TV/monitor, they are always at 1024x768 @60Hz.

References:

https://pimylifeup.com/raspberry-pi-screen-resolution/

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

Tried with hdmi_group as CEA and as DMT. Same results.

Content of /boot/config.txt

# See /boot/overlays/README for all available options

gpu_mem=64
initramfs initramfs-linux.img followkernel
kernel=kernel8.img
arm_64bit=1
enable_gic=1
disable_overscan=1

#enable sound
dtparam=audio=on
hdmi_drive=2

#enable vc4
dtoverlay=vc4-fkms-v3d
max_framebuffers=2


hdmi_force_hotplug:1=1
hdmi_group:1=1
hdmi_mode:1=16
hdmi_force_mode:1=1

#hdmi_force_hotplug:1=1
#hdmi_group:1=2
#hdmi_mode:1=82
#hdmi_force_mode:1=1

What else can I try? :thinking:

hdmi_force_edid_3d:1=1
hdmi_mode:1=16
hdmi_group:1=1
hdmi_force_mode:1=1
hdmi_ignore_edid:1=0xa5000080

Thanks @Darksky !!!

It worked! :partying_face:

1 Like

Awesome!

Remember every time the kernel updates your /boot/config.txt will get over written but it will save yours in a .pacsave so you will have to make adjustments again in the /boot/config.txt before rebooting.

Pushed linux-rpi4-4.19.113 and linux-rpi4-mainline-5.5.13 to the unstable branch today (along with the new firmware: raspberrypi-bootloader-20200326 / raspberrypi-bootloader-x-20200326) so it will not be long before the kernel will want to upgrade.

Also remember to make adjustments for our repo change:

Another mirror transition - Manual intervention required!

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