Hi all,
I’m having this same exact problem with retropie 3.0 beta.
I tried this solution but somewhere in the config.txt there allready is a line that says hdmi_drive=2 . I’m not sure what I’m doing wrong here, so help would be appreciated. My config.txt looks like this. I did not edit anything, it came like this after installing 3.0 beta.
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# 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
# for more options see
http://elinux.org/RPi_config.txt
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256
overscan_scale=1
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thanks in advance!