For my raspberry pi I need to have a pause between server start and xset command:
My start script include commands: sleep 20 $DISPLAY xset s noblank s off -dpms 2017-01-08 19:19 GMT+01:00 Alan Corey <alan01...@gmail.com>: > My workaround is to leave the Pi on and only turn on the monitor when > I sit down at it. I used to love xscreensaver but it was impractical. > Some of those "hacks" didn't exit cleanly. > > pi2# tvservice > Usage: tvservice [OPTION]... > -p, --preferred Power on HDMI with preferred settings > -e, --explicit="GROUP MODE DRIVE" Power on HDMI with explicit GROUP > (CEA, DMT, CEA_3D_SBS, CEA_3D_TB, CEA_3D_FP, CEA_3D_FS) > MODE (see --modes) and DRIVE (HDMI, > DVI) > -t, --ntsc Use NTSC frequency for HDMI mode > (e.g. 59.94Hz rather than 60Hz) > -c, --sdtvon="MODE ASPECT" Power on SDTV with MODE (PAL or > NTSC) and ASPECT (4:3 14:9 or 16:9) > -o, --off Power off the display > -m, --modes=GROUP Get supported modes for GROUP (CEA, > DMT) > -M, --monitor Monitor HDMI events > -s, --status Get HDMI status > -a, --audio Get supported audio information > -d, --dumpedid <filename> Dump EDID information to file > -j, --json Use JSON format for --modes output > -n, --name Print the device ID from EDID > -h, --help Print this information > pi2# > > > On 1/8/17, Gene Heskett <ghesk...@shentel.net> wrote: > > 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> > > > > > > > -- > Credit is the root of all evil. - AB1JX > >
