turn on s-video video out of xM board.

How can I change the video out to s-video from Angstrom Linux? I am
using xM with the pre-built binaries in the micro SD (out of box

I came across this link: http://code.google.com/p/beagleboard/wiki/LinuxHints

But it seems that the path is different now.

root@beagleboard:/usr/bin# ./testsvideo &
root@beagleboard:/usr/bin# Current resolution is 1024 x 768
Switching to TV output (720 x 482)...

mode "720x482-126"
    [ 305.049621] omapdss MANAGER error: display 'tv' already has a
manager 'tv'
# D: 56.000 MHz, H: 63.637 kHz, [ 305.060577] omapdss MANAGER error:
failed to set manager
V: 126.264 Hz
    geometry 720 482 1024 768 16
    timings 17857 80 48 3 15 32 4
    accel false
    rgba 5/11,6/5,5/0,0/0
root@beagleboard:/usr/bin# echo 'tv' > /sys/class/display_control/
-sh: can't create /sys/class/display_control/omap_disp_control/
graphics: nonexistent directory

It seems that the path maybe here for the version shipped in the board
(I did some trial and error but didnt help)
root@beagleboard:/# cd /sys/devices/platform/omapdss/
root@beagleboard:/sys/devices/platform/omapdss# ls
display0 modalias
display1 overlay0
driver overlay1
manager0 overlay2
manager1 power
microamps_requested_vdda_dac subsystem
microamps_requested_vdds_dsi uevent

I tried setting from u-boot (http://elinux.org/BeagleBoardUbuntu#S-
Video) but I think I was messing it up, as I ended up in Kernel Panic.

How can I change the video out to S_video and then test for some video
coming on the monitor?


I also tried what you said and had the same problems.

This solved the problem for me:




I think the problem was the testsvideo - it was overwriting the “tv” manager. I fixed that.

How do I test something on video out?