Feature request, but must be universallly accepted by ALL blanker authors

Dan Arena ddan39 at gmail.com
Fri Oct 2 19:54:30 UTC 2020

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.

Happy Friday!


On Fri, Oct 2, 2020 at 3:30 PM Gene Heskett <gheskett at shentel.net> wrote:
> 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>
> _______________________________________________
> xorg at lists.x.org: X.Org support
> Archives: http://lists.freedesktop.org/archives/xorg
> Info: https://lists.x.org/mailman/listinfo/xorg
> Your subscription address: %(user_address)s

More information about the xorg mailing list