Feature request, but must be universallly accepted by ALL blanker authors
gheskett at shentel.net
Fri Oct 2 22:23:30 UTC 2020
On Friday 02 October 2020 15:54:30 Dan Arena wrote:
> Good afternoon Gene,
> I am not sure about xfce, I suspect they do have settings in their GUI
> settings manager to adjust what you want, but seeing as this is the
> xorg mailing list I will tell you how I do it when running just X with
> a simple window manager. This is probably what you want. I put these
> lines into my /etc/X11/xorg.conf file on an appliance-like system for
> non-linux users. The first two settings DontVTSwitch and DontZap
> aren't actually related to "screen blanking", they prevent you from
> using ctrl+alt+f1 and ctrl+alt+backspace. You can delete them if you
> Section "ServerFlags"
> Option "DontVTSwitch" "on"
> Option "DontZap" "on"
> Option "BlankTime" "0"
> Option "StandbyTime" "0"
> Option "SuspendTime" "0"
> Option "OffTime" "0"
> Anyways, thanks for the entertaining email.
I didn't really intend for it to be entertaining. My machines are limited
to a couple horsepower, but there are folks on that mailing list with
50+ horsepower spindle motors, so I was serious in my use of maimed or
The above I assume is best tested after a reboot? But I don't see an
xorg.conf file in the /etc/X11 directory. Debian 10, I have this:
gene at lathe:/etc/X11$ ls -l
drwxr-xr-x 2 root root 4096 Sep 29 15:06 app-defaults
-rw-r--r-- 1 root root 18 Sep 7 06:40 default-display-manager
drwxr-xr-x 6 root root 4096 Sep 29 15:06 fonts
-rw-r--r-- 1 root root 17394 Nov 23 2016 rgb.txt
drwxr-xr-x 2 root root 4096 Sep 29 15:06 xinit
drwxr-xr-x 2 root root 4096 Feb 11 2019 xkb
-rwxr-xr-x 1 root root 709 Nov 23 2016 Xreset
drwxr-xr-x 2 root root 4096 Sep 29 15:06 Xreset.d
drwxr-xr-x 2 root root 4096 Sep 29 15:06 Xresources
-rwxr-xr-x 1 root root 3517 Nov 23 2016 Xsession
drwxr-xr-x 2 root root 4096 Sep 29 16:07 Xsession.d
-rw-r--r-- 1 root root 265 Nov 23 2016 Xsession.options
drwxr-xr-x 2 root root 4096 Sep 29 15:06 xsm
-rw-r--r-- 1 root root 13 Dec 5 2016 XvMCConfig
-rw-r--r-- 1 root root 630 Sep 7 06:40 Xwrapper.config
> Happy Friday!
Day of the week is only important if its sunday as I'm a DM-II, and I
shoot myself with bidureon on Sundays, and Wednesdays are trash
collection pickups about dawn on Thursdays. Being retired for 17+ years,
the rest of the week is a blur. Somewhat explainable by the fact I'll be
86 yo by the time the next week gets started good. :) And I don't see a
good candidate in the list above.
I wonder what would happen if I just create that file and reboot?,
done. /var/log/Xorg.0.log exists, and it must have been read as all that
stuff is 0 in the Xorg.0.log. htop says lightdm-greeter is running for
the initial login. zero X showing in htop. Go up the hill and see since
the monitor is in fact turned off till I turn it on. Which I did. Didn't
bither it a bot. 11 minutes later I'm looking at a color cycling screen,
and when I move the mouse, I'm looking at the lightdm-greeter login
Next? Or was that our best shot?
Thanks Dan A.
> On Fri, Oct 2, 2020 at 3:30 PM Gene Heskett <gheskett at shentel.net>
> > Greetings x-people;
> > The LinuxCNC people have just brought it up from Debian wheezy to
> > buster for a base install.
> > But the security paranoia is going to get someone maimed or killed.
> > Someone has decreed that the screen blanker must be subject to a new
> > login before anything can be done about a runaway machine with
> > enough horsepower at its disposal to kill.
> > I have now been 3 days looking for a way to disable this blanker,
> > trying several methods by way of xset, only to find 15 minutes later
> > that its been undone and the blanker kicks in regardless.
> > So I am proposing that an env variable be named an agreed upon name,
> > and that its presence totally disables any and ALL screen blanker's
> > regardless of whose desktop of the day is installed. We can
> > incorporate the setting of this, on launching LinuxCNC, and
> > unsetting it when LinuxCNC is being shut down.
> > If you agree that safety overrides paranoia, please consider this as
> > part of the supplied X11 implementations.
> > In the meantime, since xset seems powerless to disable it, can
> > someone tell me how, in xfce4, to disable it. Haveing it kick in in
> > 10 minutes, while the machine is carving a part, and a miss-command
> > does something wrong that needs to be stopped as quickly as
> > possible, having a locked screen requiring a login via a swarf
> > covering equipt keyboard is simply dangerous to both the operator
> > and the machine. So I'm asking how do I get rid of it, totally. We
> > can operate a monitors power switch if we are done for the day, but
> > we can't tolerate anything getting in the way of controlling that
> > runaway machine with one keystroke during the day.
> > Please advise. And thank you.
> > 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)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
> > _______________________________________________
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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)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>
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