cant get screen to work

Cooleoe6

i cant get a 5" HDMI LCD (B) waveshare screen i just bought to work with my retropie could anyone help?

Pi Model: 3b
RetroPie Version Used: 4.1
Built From: Pre made SD Image on RetroPie website
USB Devices connected: wireless keyboard+mouse, fake xbox 360 controler (both working fine as i have used them in games)
Controller used:xbox 360
Error messages received: none
Log found in /dev/shm/runcommand.log (if relevant): i dont know what this is
Guide used: i have tried verious gueds not compleateng any as there has been things not there such as settings. i have also been trying to figure it out myselfe
Attachment of config files:

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=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=1920#framebuffer_height=1080

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=87# 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
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256
overscan_scale=1
dtoverlay=w1-gpio

rbaker

@Cooleoe6 Take a look at the line in bold type along the top of the page.

Cooleoe6

sorry im new

Brigane

@Cooleoe6 Have you tried following this video guide?

Cooleoe6

@Brigane yes but mine is different as i only have a HDMI, power and touch screen ports.

Brigane

@Cooleoe6 How about some more info about your problem? Does the screen boot or not? Have you written this in the /boot/config.txt file?

hdmi_group=2
hdmi_mode=87
hdmi_cvt 800 480 60 6 0 0 0

Cooleoe6

@Brigane i have done the first 2 but there is no HDMI_cvt

Cooleoe6

@Brigane the best ive managed to do was get the top left corner of the screen to show up but even then there was black bars on the screen to

Cooleoe6

i have posted my config file above if it helps

Brigane

@Cooleoe6 Have you tried with HDMI_cvt?

Cooleoe6

@Brigane there is no cvt in the config file.

Cooleoe6

@Brigane this is the screen i im trying to use
http://www.waveshare.com/product/5inch-hdmi-lcd-b.htm

Brigane

@Cooleoe6 you have to add "HDMI_cvt" to the config yourself, it's not there by default :)

Cooleoe6

@Brigane oh right sorry where do i put it?

Brigane

@Cooleoe6 in /boot/config.txt

#uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt=800 480 60 6 0 0 0