5 Inch HDMI Display with USB TouchScreen SKU (104990243)

Q1: Right side of the LCD is blank and not display full screen.   

please following below by using "sudo /boot/config.txt" to change resolution. thanks.  

# 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 (here we are forcing 800x480!)

hdmi_group=2

hdmi_mode=1

hdmi_mode=87

hdmi_cvt 800 480 60 6 0 0 0

 

# 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

 

# for more options see http://elinux.org/RPi_config.txt 5 Inch HDMI Display with USB TouchScreen

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