creighton
Topic Author
Posts: 6
Joined: 09 Jul 2019, 05:24

Cannot output monitor display

11 Sep 2019, 09:01

Hi,

The RevPi was working normally until when I rebooted using the terminal by typing "sudo reboot". The problem that occurred is that my monitor stops receiving hdmi signal from the RevPi. Therefore, I cannot see any output displayed in my monitor at all.

I have tried to access the config.txt file in /boot/config.txt and made the following changes which can be referred in this page, "https://howtoraspberrypi.com/raspberry- ... t-working/".
However, it is still not working. Currently, this is the details in the above mentioned file:

# 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=0

# 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=2
#hdmi_mode=2

# 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
dtoverlay=revpi-connect
dtparam=eth0_mac_hi=0xc83ea701
dtparam=eth0_mac_lo=0x3b91
dtparam=eth1_mac_hi=0xc83ea701
dtparam=eth1_mac_lo=0x3b92

May I know how to proceed from here? Kindly advice and thank you.

Regards,
Creighton
 
User avatar
dirk
KUNBUS
Posts: 491
Joined: 15 Dec 2016, 13:19

Re: Cannot output monitor display

13 Sep 2019, 11:07

Dear Creighton, please try to install the image of the system. Maybe there is a typo in the configuration.
Have a look at this video Tutorial 01 – Creation of an image.
And here https://revolution.kunbus.com/tutorials/images-2/
and here
https://revolution.kunbus.com/tutorials ... d-stretch/
 
creighton
Topic Author
Posts: 6
Joined: 09 Jul 2019, 05:24

Re: Cannot output monitor display

13 Sep 2019, 12:05

Hi Dirk,

Thank you for your solutions. I tried writing my original image into the device which I have backed up earlier and it is working now.

Thank you.

Regards,
Creighton
 
User avatar
dirk
KUNBUS
Posts: 491
Joined: 15 Dec 2016, 13:19

Re: Cannot output monitor display

16 Sep 2019, 09:08

Thank you for your positive feedback. Never mind, this happens.

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