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.
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?