in kali config.txt is placed in /media/root/random number of the flash card/config.txt
booting from there or not, I'm totaly able to edit settings/changing resolutions/attaching i2c or spi modules etc.
command is
nano /media/root/random number of the flash card/config.txt
to identify the number type cd /media/root then enter the ls and again enter
then remove # to activate what you want and hit Ctrl+O then Ctrl+X then reboot.
After that check if there is a hdmi signal.
I also have LG tv with hdmi.
here's my config for reference, the underlined text is the functions to check for your case one by one:
Code:
# 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
framebuffer_depth=32
framebuffer_ignore_alpha=1
# 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