HDMI - possible to power on/off samsung TV/monitor from my PC?

I use a Samsung UN55MU8000 TV as my PC monitor, which replaced a Dell monitor, both use the same HDMI cable. The Dell would power off and power on whenever I put the computer into or out of standby mode or shutdown. But the samsung does not - I have to power it off and on manually using its remote, it does not appear to be able to take a power on/off queue from the PC. Is this a limitation of the Samsung? Are there some HDMI cables that will do this and others that won't, depending on how they are wired for CEC-control? Btw I have both enabled and disabled Anynet+ on the samsung and it makes no difference.

Hello johnhoh,

Is there a "standby" setting on the Samsung TV? I am unfamiliar with this model, but I wondered if there is such an Eco setting on the TV, that enables/disables standby options?

iko22 said:

Hello johnhoh,

Is there a "standby" setting on the Samsung TV? I am unfamiliar with this model, but I wondered if there is such an Eco setting on the TV, that enables/disables standby options?

It does have by default a standby mode where it shuts off after 15 minutes with no input signal. So if I shut down the PC or put the PC to sleep, the monitor shuts off after 15 minutes. But the monitor does not turn on when the PC is turned on. I recall there is some ability of HDMI-connected monitors to do this, that is, to power up and down from a cable signal just like a DVI or VGA monitor but I am not sure the TV has this ability.

I mean is there an "Eco" setting that configures what the Standby achieves?

yes here is the Eco section....
-------------------
Settings > General > Eco Solution

You can adjust the brightness level of the TV, reduce overall power consumption, and prevent overheating.
● Ambient Light Detection
Automatically adjusts the brightness level of the TV, according to the ambient light level, to reduce power consumption. If the Ambient Light Detection has adjusted the screen brightness to a too bright or dark level, you can select Minimum Backlight to manually adjust the minimum screen brightness.
● Minimum Backlight
When the Ambient Light Detection is turned on, you can manually adjust the minimum brightness of the TV screen to consider the brightness level of the surroundings. This function acts only when the value is less than
Power Saving Mode
Allows you to select a brightness setting from the list to reduce the TV's power consumption.
● Motion Lighting
Adjusts the brightness in response to on-screen movements to reduce power consumption.
● Auto Power Off
Automatically turns off the TV to reduce unnecessary power consumption if there is no operation for 4 hours.
------------------

but what I am specifically looking for is that I recall reading somewhere that in order for an HDMI monitor to have its on/off state controlled through the HDMI cable, there something in the hdmi signal that does this. I had this same issue with an older hdmi TV as well that could not power off/power on through the hdmi cable, while computer monitors of course do it all the time.

The HDMI Graphics Card (and software drivers) needs to be CEC compatible, otherwise the computer needs a CEC-client software installed.

johnhoh said:

yes here is the Eco section....
-------------------
Settings > General > Eco Solution

You can adjust the brightness level of the TV, reduce overall power consumption, and prevent overheating.
● Ambient Light Detection
Automatically adjusts the brightness level of the TV, according to the ambient light level, to reduce power consumption. If the Ambient Light Detection has adjusted the screen brightness to a too bright or dark level, you can select Minimum Backlight to manually adjust the minimum screen brightness.
● Minimum Backlight
When the Ambient Light Detection is turned on, you can manually adjust the minimum brightness of the TV screen to consider the brightness level of the surroundings. This function acts only when the value is less than
Power Saving Mode
Allows you to select a brightness setting from the list to reduce the TV's power consumption.
● Motion Lighting
Adjusts the brightness in response to on-screen movements to reduce power consumption.
● Auto Power Off
Automatically turns off the TV to reduce unnecessary power consumption if there is no operation for 4 hours.
------------------

Sorry I posted you in the wrong direction, I was looking at a Sony TV. I see you have found Samsung Anynet+.