On Sunday 08 January 2017 12:52:01 Alan Corey wrote: > No luck with that here either, it would be very handy to have. But > then I'm using an HDMI->VGA adapter and my monitor is ancient. I > think the standard was that when horizontal and vertical sync pulses > both go away the monitor's supposed to immediately switch off or after > a delay period. An adapter shouldn't interfere with that. Never > happens though. > Here it never happens, possibly because the screen savers fawncy graphics screen saver stuff never stops. pull the hdmi cable and it displays "no signal" in a floating box, and powers down in about 30 secs.
> I installed some extra stuff (maybe, it was 6 months or more ago): > > pi2# apropos dpms > DPMSCapable (3) - returns the DPMS capability of the X server > DPMSDisable (3) - disables DPMS on the specified display > DPMSEnable (3) - enables DPMS on the specified display > DPMSForceLevel (3) - forces a DPMS capable display into the > specified power... DPMSGetTimeouts (3) - retrieves the timeout values > used by the X server for ... DPMSGetVersion (3) - returns the > version of the DPMS extension implemented ... DPMSInfo (3) - > returns information about the current DPMS state DPMSQueryExtension > (3) - queries the X server to determine the availability o... > DPMSSetTimeouts (3) - permits applications to set the timeout values > used by... pi2# > Some of those look like functions to be called from C in a program. > This is on a Pi 3B under Raspbian Jessie. > > Searching in the Pi forums for dpms gets a bunch of hits, but > different people are looking for different things like how to keep the > monitor always on. https://www.raspberrypi.org/forums/ I wanted to > turn it completely off, including the backlight. > Same here as I want the pi running 24/7 so amanda can back it up in the middle of the night. > My guess is that it has to do with the GPU and how well X functions > are/aren't implemented. If you're in Raspbian take a look at > tvservice (no man page) which seems to be about the only thing that > connects to the GPU. I just did tvservice --off and had to ssh in > from another box, short of rebooting. Backlight was still on though. Even for an led backlight, thats a bit of a bummer. The whole monitor only uses 11 watts, but it sure advertises that its on. > Unplugging the monitor's power cord and plugging back in did nothing > so it didn't *really* turn the monitor off. tvservice is also unique > in letting you change video modes on the fly, otherwise you need to > put a change into /boot/config.txt and reboot. Straight Debian on a > Pi, I've no idea. > > X needs to talk to the GPU better. Agreed. > On 1/8/17, Gene Heskett <ghesk...@shentel.net> wrote: > > Greetings folks; > > > > Running LXDE. > > > > And xset dpms q returns: > > DPMS (Energy Star): > > Standby: 450 Suspend: 600 Off: 900 > > DPMS is Enabled > > Monitor is On > > > > At the end of its report, and the monitor was manually powered down > > when I left the area around 6 pm last night, so it obviously has no > > knowledge of the monitors real status. > > > > Is my install missing some utility X11 thing? > > > > Thanks. > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > Genes Web page <http://geneslinuxbox.net:6309/gene> Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>
