TV Config

On a Samsung 4K UHD TV the resolution set is controlled by the device type set for the HDMI port used.

Always ensure the HDMI source type is set to "PC". This will ensure the hdmi_group and hdmi_mode settings in config.txt (below) are honoured.

Do not set the HDMI source type to "Console" or the TV's full UHD resolution of 3840 x 2160 pixels will be enforced.

To set the HDMI source type, on the TV select Source -> HDMI -> Edit (arrow up)

Boot Config to support a Samsung TV

The following settings are critical to making the RetroPie work on a Samsung TV. These settings should be applied to /boot/config.txt.

# uncomment below for samsung TV
hdmi_drive=2

# uncomment if you get no picture on HDMI for a default \x22safe\x22 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
#overscan_scale=1

# uncomment to force a console size. By default it will be display\x27s 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
#hdmi_ignore_cec=1

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=1
hdmi_mode=16
#hdmi_group=2
#hdmi_mode=82

# can fix some 4K TVs
#[hdmi:0]
#hdmi_max_pixel_freq=200000000
#[hdmi:1]
#hdmi_max_pixel_freq=200000000
#hdmi_ignore_edid=0xa5000080

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4
config_hdmi_boost=7

# uncomment to request GAME MODE on newer TVs
#edid_content_type=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800