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#1 2018-10-29 09:18:58

georpo
Member
Registered: 2018-10-28
Posts: 5

8.9" out of sync

Hello!

I bought a 2560x1600 lcd panel from aliexpress which is supposed to be:

"100% Tested 8.9 inch 2560*1600 2k 144p IPS lcd display monitor with HDMI-MIPI for DIY 3d printer compatible Raspberry PI3"


for my DIY DLP printer.

When I use 1920x1080 resolution the projector calibration image is shown correctly.
When I use 2560x1600 resolution the projector calibration image appears for 2 seconds and then looses sync (?) and shows lines.

The seller sent me the config file below but no luck.

When I connect to my pc  the LCD shows 2560x1600 correctly.

Also when the raspberry PI3 boots the boot text is also OK so I think it is a nanodlp problem.

Please help me because I am stuck!




# 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

hdmi_pixel_freq_limit=300000000
hdmi_timings=2560 0 123 10 50 1600 0 12 4 4 0 0 0 55 0 222183000 0
hdmi_drive=2
disable_overscan=1
max_framebuffer_width=2560
max_framebuffer_height=2560


display_rotate=0
framebuffer_width=2560
framebuffer_height=1600


# 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
gpu_mem=128

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