Trouble with TX commands

[thutson]

Working from an RPi, I have no problem turning a TV on and off using
echo "on 0" | cec-client -s
and
echo "standby 0" | cec-client -s
but when I try to use any TX code I get no response and nothing of significance in the logs. The TV is a Vizio and the command to put in standby I am trying is
echo "tx 10 36" | cec-client -s
Any ideas why the preboxed commands work but not the TX?

[asulkowski]

I have the same problem. Most of the "preboxed" commands work. No TX commands work.

[opdenkamp]

the syntax is:
echo "tx 10:36" | cec-client -s