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Hello, |
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|
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On Thu, 11 Jul 2019, Laurence Perkins wrote: |
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>You could also leave DontVTSwitch on all the time and set a keyboard |
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>shortcut to run chvt (man 1 chvt) with appropriate permissions and |
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>parameters instead. Keyboard shortcuts shouldn't get processed if the |
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>screen is locked. |
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The screensaver has to get _and keep_ the lock on input. |
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The sad thing is, people do needless rewrites and get it wrong again |
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and again and again, despite jwz' xscreensaver code from 1991 on, |
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setting an example on how to do it right... Cue gnome-screensaver, the |
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kde stuff, apparently also i3lock etc.pp. ad nauseam, all repeating |
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the very bugs jwz wrote about in 2004 (the toolkits.html)... |
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VT Switching is just a little subclass of the underlying problems of |
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those "lock screen" programs that don't lock your screen. |
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==== https://www.jwz.org/xscreensaver/toolkits.html / Epilogue ==== |
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I wrote this document in 2004, explaining the approach to privilege |
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separation that xscreensaver has taken since 1991. Of course, the |
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people doing needless rewrites of xscreensaver have ignored it for |
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that whole time, and have then gone on to introduce exactly the bug |
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that I described in this document as a hypothetical strawman! And -- |
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this would be hilarious if it weren't so sad -- have introduced it |
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multiple times. As I said in 2015: |
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If you are not running xscreensaver on Linux, then it is safe to |
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assume that your screen does not lock. Once is happenstance. Twice |
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is coincidence. Three times is enemy action. Four times is |
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Official GNOME Policy. |
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==== |
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(read the whole thing linked document!). Also: |
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https://www.jwz.org/xscreensaver/man1.html#8 |
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https://www.jwz.org/blog/2014/04/the-awful-thing-about-getting-it-right-the-first-time-is-that-nobody-realizes-how-hard-it-was/ |
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https://www.jwz.org/blog/2015/04/i-told-you-so-again/ |
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(also follow the "previous" links ;) |
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So the solution is to just use "xscreensaver" by jwz. Which can be |
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configured to just blank the screen etc. as wanted by the op. See also |
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the FAQ: https://www.jwz.org/xscreensaver/faq.html |
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HTH, |
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-dnh |
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-- |
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"Humans need fantasy .. to *be* human" -- Death (in Hogfather) |
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