To summarize before I get into detail I will list what I have done to try to resolve this issue first and my conclusion(s)/
It would be very helpful if a tech could plug a set of glasses into a rasp pi 2's composite video and see if they can help.
Here is my setup: To clarify I have plugged this cable both into the rasp pi 2's composite video jack, and the smaller end into the glasses pack: No matter the composite settings in /boot/config.txt (tried ntsc, ntsc japan,pal, and brazillian pal),
also other tweaks such as hdmi_ignore_hotplug etc.. etc..(full config.txt posted at the end)
I will usually get just a blank screen on the glasses, but sometimes I will get a nanosecond flash of the pi 2's screen every few seconds. It varies on attempts from nothing to frequent flickers. It is often also distorted if/when you get get a glimpse of it flickering as so: I have gone over the config.txt file pretty thoroughly
I have tried removing the case to make sure there is a good connection between the board and the glasses plug
I have tried it on a different composite video player, initially it worked but was VERY flickery but on retest it seems better -ish..
I have tried switching the cables around but its pretty obvious yellow is video
I have rechecked all connections (its easy to miss an unseated connection on the glasses as they snap in)
I have concluded that either the glasses are wonky, the composite video plug on the pi 2 is defective, or
the male/male mini cable included with the video glasses is of the wrong type. The cable does look to be TRRS but perhaps the video signal is not in position 4 on the sleeve. I noticed I can get faint audio out of the wrong earpiece connection so this might explain why I am getting intermittent video.
No on seems to sell composite cables in the brick and mortar stores anymore, I even resorted to going with an powered hdmi adapter and a new config but that thing don't seem to work on anything (after testing) much less the raspberry pi2.
I would splice the mini cable and mess with the wire order in it, to see if I can get the signal order right on the sleeves (if this would be a good way to resolve sleeve order) but if the glasses are the culprit I would likely lose any chance of an rma.
Any help would be appreciated! :)
config.txt
Code: Select all
#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
#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 coposite NTSC 0 (usa), 1 ntsc japan, 2 pal, 3 pal brazillian
sdtv_mode=0
#aspect ratio, did not see an entry but putting 4:3 here are choices
#this is a comment sdtv_aspect 1 = 4:3, 2 = 14:9, 3 = 16:9
sdtv_aspect=1
#sdtv_aspect=2
#sdtv_aspect=3
#ingnore hdmi all together, uncomment later maybe see if it works but this forces compsite mode which we want
hdmi_ignore_hotplug
#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
#increasing framebuffer depth to 24 to match glasses bit color
framebuffer_depth=24
#gunna increase the frame buffer width to 320 to match the glasses as well see if that helps
framebuffer_width=320
#gunna increase teh frame buffer height to 240 to see if that helps also
framebuffer_height=240
#NOOBS Auto-generated Settings:
#hdmi_force_hotplug=1
#config_hdmi_boost=4
#overscan_left=24
#overscan_right=24
#overscan_top=16
#overscan_bottom=16
#disable_overscan=0