• Re: Screen blanking in Bullseye

    From bob prohaska@3:770/3 to Jan Panteltje on Fri Jan 20 02:42:10 2023
    Jan Panteltje <pNaonStpealmtje@yahoo.com> wrote:
    On a sunny day (Thu, 19 Jan 2023 01:12:19 -0000 (UTC)) it happened bob prohaska <bp@www.zefox.net> wrote in <tqa5dj$14e8m$1@dont-email.me>:

    What's the incantation to turn on screen blanking on 64 bit RasPiOS?

    I dunno, but I always use xset from a terminal in Linux:

    xset s 300
    blanks the sceen after 300 seconds.

    xset s 0 stops any blanking

    see man xset for more good stuff

    Put it in your startup script?
    Works on my 32 bit Pi4 8GB, just tested
    and on all my Linux computahs ;-)

    I tried using xset s 30 in interactive mode. It changed
    the timeout value for xset q, so I think it "took", but
    the screen still doesn't blank.

    This is a 64 bit system, might that be the trouble?
    Must the command be issued when the x serter is started?

    Thanks for writing!

    bob prohaska






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  • From bob prohaska@3:770/3 to panteltje on Fri Jan 20 15:42:04 2023
    panteltje <alien@comet.invalid> wrote:
    Maybe enable DPMS?
    What does
    xset q
    say about DPMS?


    Screen Saver:
    prefer blanking: yes allow exposures: yes
    timeout: 30 cycle: 600
    Colors:
    default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff
    Font Path:
    built-ins
    DPMS (Energy Star):
    Standby: 600 Suspend: 600 Off: 600
    DPMS is Enabled
    Monitor is On


    As of last night blanking didn't work. This morning, it does.
    The only change was killing the chromium browser. When I restarted
    the browser blanking still worked.

    I'm thoroughly puzzled. When first set up the machine didn't blank,
    then I turned blanking on and it worked. After an update/upgrade
    cycle it stopped blanking, after repeated attempts to set blanking
    on and rebooting it still didn't blank. Just now, a little while
    after stopping chromium, blanking resumed.

    I'll do nothing and watch how it behaves after a few reboots.

    Thanks for writing!

    bob prohaska

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  • From panteltje@3:770/3 to prohaska on Fri Jan 20 17:32:26 2023
    On a sunny day (Fri, 20 Jan 2023 15:42:04 -0000 (UTC)) it happened bob
    prohaska <bp@www.zefox.net> wrote in <tqecoc$24ag9$2@dont-email.me>:

    As of last night blanking didn't work. This morning, it does.
    The only change was killing the chromium browser. When I restarted
    the browser blanking still worked.

    I'm thoroughly puzzled. When first set up the machine didn't blank,
    then I turned blanking on and it worked. After an update/upgrade
    cycle it stopped blanking, after repeated attempts to set blanking
    on and rebooting it still didn't blank. Just now, a little while
    after stopping chromium, blanking resumed.

    I'll do nothing and watch how it behaves after a few reboots.

    Thanks for writing!

    Good it works,
    I reminds me of something.
    If the system thinks something is running it won't blank.
    I think I did see that with for example mplayer playing movies.
    Maybe chromium had some URL with video or similar content selected?

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  • From bob prohaska@3:770/3 to panteltje on Fri Jan 20 19:12:40 2023
    panteltje <alien@comet.invalid> wrote:
    On a sunny day (Fri, 20 Jan 2023 15:42:04 -0000 (UTC)) it happened bob prohaska <bp@www.zefox.net> wrote in <tqecoc$24ag9$2@dont-email.me>:

    As of last night blanking didn't work. This morning, it does.
    The only change was killing the chromium browser. When I restarted
    the browser blanking still worked.

    I'm thoroughly puzzled. When first set up the machine didn't blank,
    then I turned blanking on and it worked. After an update/upgrade
    cycle it stopped blanking, after repeated attempts to set blanking
    on and rebooting it still didn't blank. Just now, a little while
    after stopping chromium, blanking resumed.

    I'll do nothing and watch how it behaves after a few reboots.

    Thanks for writing!

    Good it works,
    I reminds me of something.
    If the system thinks something is running it won't blank.
    I think I did see that with for example mplayer playing movies.
    Maybe chromium had some URL with video or similar content selected?

    Yes, that seems to be the problem. Chromium had a New York Times
    front page open tab, which contained a video clip that didn't stop
    looping. There doesn't seem to be a visible way to turn it off.

    Is there some way to make the screen blanker ignore HDMI traffic
    and only react to mouse and keyboard? The default behavior is self
    defeating and seemingly counterproductive.

    Thanks for reading!

    bob prohaska

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  • From Jan Panteltje@3:770/3 to jj@franjam.org.uk on Wed Feb 8 06:44:26 2023
    On a sunny day (Tue, 7 Feb 2023 22:39:14 -0000 (UTC)) it happened Jim Jackson <jj@franjam.org.uk> wrote in <slrntu5koi.jvc.jj@iridium.wf32df>:

    On 2023-02-07, Jan Panteltje <alien@comet.invalid> wrote:
    On a sunny day (Thu, 19 Jan 2023 05:19:48 GMT) it happened Jan Panteltje >><pNaonStpealmtje@yahoo.com> wrote in <tqak6b$1a72k$1@dont-email.me>:

    On a sunny day (Thu, 19 Jan 2023 01:12:19 -0000 (UTC)) it happened bob >>>prohaska <bp@www.zefox.net> wrote in <tqa5dj$14e8m$1@dont-email.me>:

    What's the incantation to turn on screen blanking on 64 bit RasPiOS?

    I dunno, but I always use xset from a terminal in Linux:

    xset s 300
    blanks the sceen after 300 seconds.

    xset s 0 stops any blanking

    see man xset for more good stuff

    Put it in your startup script?
    Works on my 32 bit Pi4 8GB, just tested
    and on all my Linux computahs ;-)

    Maybe it would make sense if Raspberry P4 came with something like
    Type F1 for BIOS setup
    on power-up.
    \
    Now that is HAS EEPROM?

    Because whether it does screen blanking/screen saver is nothing to do
    with a "BIOS"?

    Sorry replied to the wrong posting it seems
    Still a normal type F1 for BIOS setup would be a good thing.
    It was intended for the boot sequence sdcard versus USB thread
    any normal BIOS allows you to select that.

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