7

I'm looking for a solution to wake up my LCD TV.

With the xset command I'm able to put the TV in different power saving modes:

xset dpms force standby

xset dpms 0 30 60

0 = standby

30 sec = suspend

60 sec = off

I need a solution to wake the TV up from these mode. So far with the:

xset dpms force on

I'm not able to do wake it up.

I want the TV to switch on 07.00 every morning and off 17.00 as a cron job.

These are my default values. Values so that the PI keeps the X window up 24/7:

/etc/X11/xorg.conf

Section "Monitor"
    Identifier "Monitor"
    Option "DPMS" "false"
EndSection

Section "ServerLayout"
    Identifier "ServerLayout0"
    Option "BlankTime"  "0"
    Option "StandbyTime" "0"
    Option "SuspendTime" "0"
    Option "OffTime" "0"
EndSection
  • Does your TV support CEC? You need to use HDMI to use it also. I can use CEC from my Pi and other devices to wake everything else up. So if I turn on my VuDuo it turns on the Pi and my Viera TV all in one go using CEC. It does not matter which remote or device I use if I turn one off then the rest go to sleep too. – Piotr Kula Nov 12 '13 at 11:17
  • I'm connected through the HDMI side. The TV is of a newer PHILIPS model. I'm able to turn the TV off. – nicoX Nov 12 '13 at 11:23
3

You need to compile libcec

apt-get install build-essential autoconf liblockdev1-dev libudev-dev git libtool pkg-config
git clone git://github.com/Pulse-Eight/libcec.git

cd libcec
./bootstrap
LDFLAGS="-s -L/usr/lib -L/usr/lib -L/opt/vc/lib" ./configure --prefix=/usr --enable-rpi --with-rpi-include-path=/opt/vc/include --with-rpi-lib-path=/opt/vc/include
make
make install

Link the libraries

ldconfig

Now check if it has found some cec devices.

 cec-client -l

To turn the TV on you will use the command

echo 'on 0' | cec-client -s

You can download the CEC specification here.

  • The last line after the ./configure command: configure: error: Raspberry Pi API not found or incompatible with libCEC I'm not able to make and make install. – nicoX Nov 12 '13 at 12:54
  • ok changed the confiture - there seems to be libraries in different places and it can't find them – Piotr Kula Nov 12 '13 at 12:58
  • 1
    apt-get install libraspberrypi-dev is required to full-fill the ./configure – nicoX Nov 13 '13 at 10:01
  • I'm able to turn it on with echo 'on 0' | cec-client -s. How do I turn it off? – nicoX Nov 13 '13 at 11:18
  • 1
    I couldn't find anything searching cec-client -s in that document. But the correct output is echo 'standby 0' | cec-client -s – nicoX Nov 13 '13 at 12:00
0

Adding the xset s reset after xset dpms force on will make the screen go on. It's not a solution since the xset command will only blank the TV. The LED lights will still be powered. So it will not literately be in standby mode.

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