Because you are using an HDMI cable to feed the TV. That means your DirecTV box has implemented HDCP (Google it) and will wait for a legal 'handshake' before it will allow streaming. Your TV is HDCP-compliant, the Slingbox is non-compliant. To get round the problem, dunp all HDMI cables and feed the TV from the Component OUT connections on the Slingbox.
please try to go in your TV settings and look for a feature called "CE-Link or Regza Link" which is a setting that Toshiba brand TV's have and turn it off completely.
the rest of the brands have it as well they just have the feature labeled different, for example.
- AOC: E-link
- Hitachi: HDMI-CEC (Thank you, Hitachi!)
- LG: SimpLink
- Mitsubishi: NetCommand for HDMI
- Onkyo: RIHD (Remote Interactive over HDMI)
- Panasonic: HDAVI Control, EZ-Sync, or VIERA Link
- Philips: EasyLink
- Pioneer: Kuro Link
- Runco International: RuncoLink
- Samsung: Anynet+
- Sharp: Aquos Link
- Sony: BRAVIA Sync
- Toshiba: CE-Link or Regza Link
- Vizio: CEC (Thank you, Vizio!)
Once you disable the CE-Link or Regza Link feature your TV should not have to be on so you can stream your Slingbox.
for more information about what that feature is for check out the link below
Hope this helps!
-Sling Media Technical Support Hidy.
I take it you read the manual ? The other thing to do is turn off the TV and the Cable box. Then turn on the Cable box. If the TV does not automatically turn on then CEC is either turn off or not supported.
In that case I refer back to my original post. Dump the HDMI cable and feed the TV from the Component OUT on the Slingbox.
Purchased a new Toshiba Ultra 4k TV and hooked up my Slingbox. The only way I can watch my TV on another device (laptop, etc), is when the TV is on a receiving a picture from our xfinity X1 set top box. Why does the TV have to be on to be able to stream the picture to my laptop or other device?