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devel / comp.unix.programmer / Re: Xlib screen saver APIs

SubjectAuthor
* Xlib screen saver APIsMuttley
`* Xlib screen saver APIsLew Pitcher
 `* Xlib screen saver APIsMuttley
  `* Xlib screen saver APIsLew Pitcher
   `* Xlib screen saver APIsMuttley
    `* Xlib screen saver APIsSpiros Bousbouras
     `* Xlib screen saver APIsMuttley
      `* Xlib screen saver APIsPo Lu
       +* Xlib screen saver APIsKaz Kylheku
       |+* Xlib screen saver APIsScott Lurndal
       ||`- Xlib screen saver APIsPo Lu
       |`- Xlib screen saver APIsPo Lu
       `* Xlib screen saver APIsMuttley
        `* Xlib screen saver APIsLew Pitcher
         `* Xlib screen saver APIsKalevi Kolttonen
          `* Xlib screen saver APIsvallor
           `* Xlib screen saver APIsKalevi Kolttonen
            +* Xlib screen saver APIsMuttley
            |+- Xlib screen saver APIsMuttley
            |+* Xlib screen saver APIsAlastair Hogge
            ||+* Xlib screen saver APIsMuttley
            |||`- Xlib screen saver APIsAlastair Hogge
            ||`- Xlib screen saver APIsScott Lurndal
            |+- Xlib screen saver APIsAlastair Hogge
            |`- Xlib screen saver APIsAlastair Hogge
            `* Xlib screen saver APIsvallor
             `* Xlib screen saver APIsScott Lurndal
              `- Xlib screen saver APIsvallor

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Re: Xlib screen saver APIs

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From: vallor@cultnix.org (vallor)
Newsgroups: comp.unix.programmer,comp.windows.x
Subject: Re: Xlib screen saver APIs
Date: Tue, 22 Aug 2023 17:26:16 -0000 (UTC)
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 by: vallor - Tue, 22 Aug 2023 17:26 UTC

On Tue, 22 Aug 2023 14:19:48 GMT, scott@slp53.sl.home (Scott Lurndal)
wrote in <8u3FM.455983$U3w1.248069@fx09.iad>:

> vallor <vallor@cultnix.org> writes:
>>On Sat, 19 Aug 2023 08:40:16 -0000 (UTC), kalevi@kolttonen.fi (Kalevi
>>Kolttonen) wrote in <ubpv5g$nu1c$1@dont-email.me>:
>>
>>> In comp.unix.programmer vallor <vallor@cultnix.org> wrote:
>>>> I don't know about you, but I don't use a screensaver to avoid
>>>> burn-in.
>>>>
>>>> I use a screensaver to *lock the screen* -- hopefully with art.
>>>
>>> I have installed Fedora 38 xfce4 Spin because I hate Gnome.
>>>
>>> It blanks the screen even when locking it. When I press any key, the
>>> screen wakes up and I can login again. No art of any kind is involved
>>> in this process.
>>>
>>> br,
>>> KK
>>
>>I use xfce also, which I switched to on the Ubuntu install from
>>System76.
>>
>>But then I installed xscreensaver, which _can_ be set to use DPMS...but
>>in the past (maybe too long ago to matter), I would have trouble with
>>getting my video back.
>>
>>I guess it's time to try again: I'm going to set it to use DPMS to
>>shutdown displays. Wish me luck.
>
> Have you tried
>
> $ xset dpms force off
>
> xset has other options to set inactivity period after which it
> automatically enters DPMS.

Indeed, that's one way to do it. :)

But I used the settings in xscreensaver-demo (advanced tab) thusly:

https://imgur.com/jvrRDe1

--
-v

Re: Xlib screen saver APIs

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Newsgroups: comp.windows.x,comp.unix.programmer
Subject: Re: Xlib screen saver APIs
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 by: Po Lu - Thu, 24 Aug 2023 02:32 UTC

Kaz Kylheku <864-117-4973@kylheku.com> writes:

> Devil's advocacy time.
>
> The purpose of a screensaver is to save the screen against burn-in; i.e.
> protect the hardware from damage.
>
> That hardware is attachd to the machine which runs the X server, so
> it makes sense for the X server to be responsible for that.
>
> Why should the server trust remote clients to protect local hardware?

If that were genuinely the impetus for the design of the core
screen-saver requests (and its outgrowth, the MIT screen saver
extension), then the X server wouldn't trust any other clients with any
graphics requests and whatnot...

Particularly given that any client can ``save'' a screen absent even the
permission to create or map windows, by drawing to the root window with
a GC whose subwindow mode is set to IncludeInferiors.

Re: Xlib screen saver APIs

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 by: Po Lu - Thu, 24 Aug 2023 02:35 UTC

scott@slp53.sl.home (Scott Lurndal) writes:

> Given DPMS, screensavers are obsolete power wasters anyway.

Given the advent and proliferation of LCD displays, the principal
purpose of a screensaver is no longer to save a screen, but to decorate
them subsequent to a period of inactivity.

devel / comp.unix.programmer / Re: Xlib screen saver APIs

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