I found this bit at https://wiki.archlinux.org/title/Displa … _Signaling

See XScreenSaver#DPMS https://wiki.archlinux.org/title/XScree … g_settings

and

Xfce#Display blanking https://wiki.archlinux.org/title/Xfce#Display_blanking

To note for anyone using Xfce:

Hmm ...
... competing for control of the same settings.

A classic case of right hand not knowing what left one does or too many fingers in the pie.
Maybe a bit of both, you'd think the chaps at Xfce would be a bit more careful.

As my WS is not dependent on battery power, I long ago decided to get rid of xfce4-power-manager and all associated files.

Cheers,

A.

Interesting ...

Thanks.
I'll give it a read.

I guess (?) you could write up a script, save it to /usr/local/bin/ and put it in your /etc/rc.local so it will run.
eg: this is the stuff I have in mine, with comments.

groucho@devuan:~$ cat /etc/rc.local
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
#
# to set all /proc/acpi/wakeup entries to 'disabled'
# no wakeup from S4 for anything
# does not survire reboot that's why it is here
# see https://dev1galaxy.org/viewtopic.php?pid=29113#p29113
#
/usr/local/bin/acpi_wakeups.sh
#
# to disable wol via ethtool at boot
# does not survire reboot that's why it is here
#
# /sbin/ethtool -s eth0 wol d
#
# 20210602 - changed for script in /usr/local/bin
# see https://dev1galaxy.org/viewtopic.php?id=4349 
#
# /usr/local/bin/no_wol.sh
#
# e1000e module is now patched to disable WoL
# see /usr/src/e1000e-patch 1001
groucho@devuan:~$ 

Nah!
Try the rc thing, should work.
The trick is to write the script with the correct syntax.  8^|

Best,

CIV

ie: Does it write to the conf file?

No it doesn't. It bypasses xorg.conf completely.

Sure:  https://unix.stackexchange.com/question … acking-out

I still need to figure out which system boot script would be the best to add this command to. Or perhaps add a new boot script specifically for it. May take a while I'm afraid

HTH!

I wonder how that command relates to the settings in xorg.conf.
ie: Does it write to the conf file?

Could you please post the link where you got the information?

TIA.

Best,

A.

xset dpms 0 0 0 && xset s noblank  && xset s off #as root!

After letting the machine idle for a few hours it appears this does the trick as the screen didn't blank. So, I'll add this to a boot-script somewhere.

I run Beowulf on a backported kernel, Xfce and a three monitor setup:

Linux devuan 5.10.0-0.bpo.3-amd64 #1 SMP Debian 5.10.13-1~bpo10+1 (2021-02-11) x86_64 GNU/Linux

It uses two Nvidia FX 580 (G96GL) cards and Nvidia proprietary legacy drivers.

I set up my xorg.conf file with DPMS set to disabled:

Section "Screen"
    Identifier     "ScreenLeft"      <- same for "ScreenCenter and "ScreenRight" 
    Device         "DeviceLeft"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "DPMS" "False"
    SubSection     "Display"
        Depth       24
        Modes      "1280x1024"
    EndSubSection
EndSection

 
This is clearly reflected in /var/log/Xorg.0.log:

groucho@devuan:~$ cat /var/log/Xorg.0.log | grep -i dpms
[    33.335] (**) Extension "DPMS" is disabled
groucho@devuan:~$ 

In addition to all this, if I run Applications -> Settings -> Screensaver (XscreenSaver 5.42) I get a pop-up that says   

My three monitors are 2x SyncMaster 940n + a Dell P1914S in the centre.

One would think that none of them would blank at all, no?

Well, one of the SyncMaster 940n units ("ScreenLeft" in xorg.conf) turns off after a while.   

No idea why and does not really matter but ....

Best,

A.

(Power saving - everything set to 'never'.)

Mind, I re-used my /home dir from Ascii, it's on a separate HDD.

Create a new user and log in as that user to test. If the problem is gone, it's something in your home configs. (~/.config)

Mind, I re-used my /home dir from Ascii, it's on a separate HDD.

Any suggestions?