On Sat, 3 Oct 2020, Gene Heskett wrote:
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.
Agreed.
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.
This is surprising. It is hard for me to see why your package - or any
package - would depend on a screensaver. I would normally expect only the
meta package that pulls in the full environment to depend on it.
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.
Looking on github, I found the following file
https://github.com/the-cavalry/light-locker/blob/master/src/light-locker-command.c
which suggests there are several ways to disable it, including one where
you can simulate user activity.
This was just a quick look, it would probably be best to talk to
light-locker developers.
best
Vladimir Dergachev
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