I am fairly new to the Raspberry Pi world. I wanted to achieve dual display using Pi4 and the usage is as follows:
- hdmi0 to be used to connect a 2K LCD panel via adapter board
- hdmi1 port to be connected to 7" capacity touch interface via adapter board with custom UI interface programmed in Kivy.
Can this be achieved and kindly advice on the steps that are required to achieve this.
Earlier, I was on Pi3 and config.txt (below) worked like charm for 2k display and used Nextion display for custom UI interface:
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dmi_pixel_encoding=2 start_x=1 gpu_mem=128 disable_camera_led=1 # uncomment if you get no picture on HDMI for a default "safe" mode #hdmi_safe=1 # uncomment this if your display has a black border of unused pixels visible # and your display can output without overscan disable_overscan= 1 # uncomment the following to adjust overscan. Use positive numbers if console # goes off screen, and negative if there is too much border #overscan_left=-16 #overscan_right=-16 #overscan_top=-16 #overscan_bottom=-16 #uncomment to force a console size. By default it will be display's size minus # overscan. framebuffer_width=1440 framebuffer_height=2560 max_framebuffer_width=1440 max_framebuffer_height=2560 # uncomment to increase signal to HDMI, if you have interference, blanking, or # no display config_hdmi_boost=4 # uncomment to force a specific HDMI mode (this will force VGA) hdmi_group=2 hdmi_mode=87 # uncomment to force a HDMI mode rather than DVI. This can make audio work in # DMT (computer monitor) modes hdmi_drive=2 hdmi_cvt=1440 2560 48 hdmi_pixel_freq_limit=500000000 hdmi_ignore_edid=0xa5000080 # uncomment if hdmi display is not detected and composite is being output hdmi_force_hotplug=1 # uncomment for composite PAL #sdtv_mode=2 #uncomment to overclock the arm. 700 MHz is the default. #arm_freq=800 # Uncomment some or all of these to enable the optional hardware interfaces #dtparam=i2c_arm=on #dtparam=i2s=on #dtparam=spi=on hvs_priority=0x32ff display_rotate=0x10000 force_turbo=1 enable_uart=1 disable_overscan=1 framebuffer_depth=24 framebuffer_ignore_alpha=1