Please Help configurate my 800x800 px round screen (blank screen)
Hi guys, Im an absolutly noob with raspberry pi and emteria. My circular Display shows me a black screen when I run Emteria OS for the first time.
with the following settings in rasbian os it works great but on Emteria which I purchased a few hours ago, it shows me only a black screen...
force_trubo=1
gpu_freq=300
core_freq=400
HDMI Basic configuration
hdmi_pixel_freq_limit=400000000
hdmi_timings=800 0 40 12 40 800 0 12 12 12 0 0 0 60 0 44740000 0
hdmi_drive=2
disable_overscan=1
max_framebuffer_width=2560
max_framebuffer_height=2560
Portrait or Landscape Setting
Portrait-1 Flexible cable is bottom side.)
display_rotate=0
framebuffer_width=800
framebuffer_height=800
For more options and information see
http://www.raspberrypi.org/documentation/configuration/config-txt.md
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=off
Please, can someone explain me what I do wrong?
Tagged:
0
Comments
Don't know if this would work for you (and there are no guarantees) but have you tried this?
Changing the line:
dtoverlay=vc4-kms-v3d,cma-256
to
dtoverlay=vc4-fkms-v3d,cma-256
That was the only line in the config I needed to change to make it display on my TV.
Hi, thanks for your answer. It was allready changed when I looked into config.txt. Dont know why but it doesnt work for me.
Anyway thanks for your help
You could try change it the other way around and see if that works. If not, must be something else.
Ok I will try it tomorrow and write back
Well, any news? Did you fix the problem or still the same? Sorry I couldn't be more help.
I have another question. What resolution and refresh rate were you using? And are you using DVI or HDMI?
hdmi_cvt=1920 1080 60 6 0 0 0
Above is the setting for 1920x1080 (1080p) 60Hz refresh rate.
Hi I found out that my mipi to hdmi board was broken. xD its working now, But I cant finish my project with the raspberry pi 3. Its to weak. 4 is out now but no support for android. I switched to rock pi 4b and its a rocket, not a rock 😁
Nice! Might have to get one of those Rock Pi 4b boards. But I have an Odroid XU4 and it's pretty powerful. Also supports Android (that you can get for free). Such a cool little board. I love it. Only downside is you have to buy the wifi and bluetooth dongles separate.
@Cee123 yeah I wanted to buy it at first but then decided for the rockpi because here its included(b-version) problem is comunity is way smaller then the one from odroid. If you need help by setting up something, you have to wait a lot and ask everybody you see xD