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

Gene Heskett gheskett at shentel.net
Sat Oct 3 08:03:26 UTC 2020

On Saturday 03 October 2020 00:39:27 Vladimir Dergachev wrote:

> On Fri, 2 Oct 2020, Gene Heskett 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.
> Just to chime in, this is not an X problem per se, but rather the
> desktop environment.

> X does not have a utility to ask for your password - just a way to
> blank the screen and turn off the monitor.
> If you were to prevent X from blanking the screen, then what would
> likely happen is that it will not go blank, but instead you will see
> either a screensaver or a password prompt from whatever screen locker
> your desktop environment is using.

Which for xfce4 is light-locker. But removing it with apt destroys the 
system by removeing 70+ other packages including ours.  Thats not an 
acceptable solution.

FWIW, I have tried mightily, to lengthen the intervals from 10 minutes on 
this stretch install running TDE. But something resets it to 10 minutes 
before the 10 minutes is up. So xset is neutered and worthless. Frankly, 
linux is as bad as winderz in determining what you can and cannot do. If 
there was an alternative that put the machines control back in the uses 
hands, I'd jump on it like stink on a skunk.

> So the issue is really with the desktop environment you are using -
> there should be a control to disable screenlocker.
> I am using KDE on my laptop and it does have it.
> My CNC machine is controlled from Jetson nano, and I was able to
> disable password prompt, but the screensaver does kick in and I have
> to muck around with monitor control key to turn it back on, as the
> monitor touchscreen turns off with the monitor.
> best

To you too Vladimir.

> Vladimir Dergachev

Cheers, Gene Heskett
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Genes Web page <http://geneslinuxbox.net:6309/gene>

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