Hi jamesh,
first of all a big 'THANK YOU' for your work! Highly appreciated.
As mentioned yesterday I've started some tests today.
Here are some infos on the setup I'm using:
- official 7in DSI display
- RPI3B
- Dell 19in Monitor, SXGA, connected via HDMI
- 12.1in TFT-module (LQ121K1LG52), connected via LVDS4Pi to DPI Interface
- all required changes applied, latest xorg.conf Settings, booting to CLI and issuing 'startx -- -layout Multihead' command
Here are my findings (so far):
1) all displays connected --> DPI and HDMI get picked-up for framebuffers
2) HDMI monitor disconnected --> only DPI is working, DSI stays silent
3) disable DPI in config.txt (you can find my config below) --> DSI and HDMI are working as expected (as I've started with this configuration before connecting the DPI display)
Questions:
- what is 'ranking' for assigning framebuffer to Interfaces?
- any idea why DSI + DPI is not working simultaniously (as this would be my preferred HW setup)?
Code: Select all
# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details
# 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=1280
#framebuffer_height=720
# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2
# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4
# 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
# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi
# Additional overlays and parameters are documented /boot/overlays/README
# Enable audio (loads snd_bcm2835)
dtparam=audio=on
start_x=1
gpu_mem=208
# ---------------------------------------------
# Enable DPI
# ---------------------------------------------
#dtoverlay=dpi24
#enable_dpi_lcd=1
# ---------------------------------------------
# Make DPI default output
# ---------------------------------------------
#display_default_lcd=1
# ---------------------------------------------
# custom HDMI mode
# ---------------------------------------------
#dpi_group=2
#dpi_mode=87
# ---------------------------------------------
# DPI output format definitions
# ---------------------------------------------
#dpi_output_format=461847
# ---------------------------------------------
# HDMI timing definitions
# ---------------------------------------------
#hdmi_timings=1280 1 40 1 1 800 1 12 2 1 0 0 0 60 0 83500000 5