[RndTbl] Raspberry Pi OS 12 bookworm and Wayland - no screen saver?

[Chris Audet]

I gave this a try on my Pi 3 Model B, but it turns out this model only
supports x11 for now (I tried "raspi-config > Advanced Options > Wayland"
and reboot but I think it's still using x11).

Just curious, what application are you running on the Pi?

I mostly use them for digital signage with FullPageOS, so haven't used the
screen blanking feature until you mentioned this issue.

chrisa at raspberrypi:~ $ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"

chrisa at raspberrypi:~ $ cat /proc/cpuinfo | grep Model
Model           : Raspberry Pi 3 Model B Plus Rev 1.3

chrisa at raspberrypi:~ $ echo $XDG_SESSION_TYPE
x11

Relevant KB:
https://www.raspberrypi.com/documentation/computers/configuration.html#wayland
"In the current version of Raspberry Pi OS Bookworm, the Raspberry Pi 4 and
Pi 400 use Wayland by default; other models of Raspberry Pi use X11 by
default."

On Wed, Oct 18, 2023 at 3:18 PM Gilbert Detillieux <
Gilbert.Detillieux at umanitoba.ca> wrote:

> And apparently when you disable screen blanking again, you get this
> value in .config/wayfire.ini:
>
> dpms_timeout=-1
>
> Gilbert
>
> On 2023-10-18 3:06 p.m., Gilbert Detillieux wrote:
> > Answering my own question, it would appear that you can set screen
> > blanking (DPMS) in the command-line/TUI tool, raspi-config...
> >
> > pi at raspberrypi:~ $ sudo raspi-config
> > pi at raspberrypi:~ $ tail -2 .config/wayfire.ini
> > [idle]
> > dpms_timeout=600
> > pi at raspberrypi:~ $
> >
> > In raspi-config, select "2 Display Options", then "D2 Screen Blanking",
> > then enable.  The above change to .config/wayfire.ini seems to be the
> > net effect.  The timeout is set to 600 seconds, and could probably be
> > changed to any reasonable value, and likely 0 would disable it again.
> >
> > Funny that there wasn't a more obvious way to set this, via GUI screen
> > preferences.
> >
> > Gilbert
> >
> > On 2023-10-18 1:03 p.m., Gilbert Detillieux wrote:
> >> So, with all the hype around the new Raspberry Pi 5 (still waiting for
> >> availability), and the new OS version, I thought I'd give the OS a try
> >> on my Pi 400, and see how things look with the new Wayland-based GUI.
> >>
> >> One strange thing I noticed (other than the slight increase in CPU use
> >> and slightly higher CPU temperature) is that there's no screen
> >> saver/blanker enabled by default.  Stranger still is there doesn't
> >> seem to be any way to enable it, at least not that I've been able to
> >> find.
> >>
> >> The old X11/Xorg-based screen savers definitely don't work with
> >> Wayland, and I don't want to turn off my monitor (and have to remember
> >> to do so) every time I'm done using the Pi.  So, does anyone know how
> >> I can enable screen blanking in Wayland?  (Preferably with Pi OS
> >> and/or Debian 12 bookworm, but any Wayland-related info would be
> >> appreciated.)
> >>
> >> If that doesn't work, I may find myself reverting back to Xorg.
> >>
> >> Thanks,
> >> Gilbert
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