Got this up and running thanks to @karsten13 's help with screen blanking. Also had start-up issues as detailed here.

Runs on a RPi 4B I had lying around with MagicMirrorOS driving the fabulous RPi monitor with a PIR sensor to sense people in the room for screen blanking. Viewing angle on this screen is very impressive, very sharp and crisp display.

The Pi is in the boiler cupboard and wiring is hidden in 25x16mm trunking painted to match the wall. PIR sensor is in the tiniest project box I could find. Screen is on a VESA mount.

MagicMirror modules:

• MMM-Universal-Pir - controlling HDMI for screen sleep
• clock
• calendar - hidden, pulling UK Holidays and Family Google calendar feeding:
• MMM-CalendarExt3Agenda with CSS mods so it fills most of the screen
• MMM-MyGarbage
• weather showing current and forecasts from UK met office
• newsfeed showing BBC news

@karsten13 thank you for all the effort you are putting into this issue. I agree, let’s go back to the version that will kill and restart the container if the display doesn’t respond to wlr-randr (and then waits for a MMM-Universal-Pir cycle to sleep it again).

Steve

@karsten13 unfortunately that didn’t work.
In the morning the screen was off and could not be restored with docker rm -f labwc && docker compose up -d or docker compose up -d --force-recreate. In both cases the console briefly came back and then the the monitor slept again. Only when i when into the labwc container and did wlr-randr --output HDMI-A-1 --on --transform 90 did the display return. At that point the MMM-Universal-Pir started counting down too and it works as normal.

magicm@magicmirror:/opt/mm/run $ docker rm -f labwc && docker compose up -d
labwc
[+] Running 2/2
 ✔ Container mm     Running                                                                                        0.0s
 ✔ Container labwc  Started                                                                                        0.5s
magicm@magicmirror:/opt/mm/run $ docker compose up -d --force-recreate
[+] Running 2/2
 ✔ Container mm     Started                                                                                        1.7s
 ✔ Container labwc  Started                                                                                        1.8s
magicm@magicmirror:/opt/mm/run $
     >>> still no screen output <<<
magicm@magicmirror:/opt/mm/run $ docker exec -it labwc bash
pi@3f4fb5c07c91:/$ wlr-randr
HDMI-A-1 "Raspberry PI RPI MON156 81005568472 (HDMI-A-1)"
  Make: Raspberry PI
  Model: RPI MON156
  Serial: 81005568472
  Physical size: 350x190 mm
  Enabled: no
  Modes:
    1920x1080 px, 60.000000 Hz (preferred)
    1920x1080 px, 60.000000 Hz
    1920x1080 px, 59.939999 Hz
    1920x1080 px, 50.000000 Hz
    1920x1080 px, 48.000000 Hz
    1920x1080 px, 47.952000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 59.939999 Hz
    1280x720 px, 50.000000 Hz
    1280x720 px, 48.000000 Hz
    1280x720 px, 47.952000 Hz
    720x576 px, 50.000000 Hz
    720x480 px, 60.000000 Hz
    720x480 px, 59.939999 Hz
    640x480 px, 60.000000 Hz
    640x480 px, 59.939999 Hz
    640x480 px, 59.939999 Hz
pi@3f4fb5c07c91:/$ wlr-randr --output HDMI-A-1 --on --transform 90
     >>> screen returns <<<
pi@3f4fb5c07c91:/$

Please check I did the pull etc correctly

magicm@magicmirror:/opt/mm $ git status
On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   install/install.sh

Untracked files:
  (use "git add <file>..." to include in what will be committed)
        install/install.sh.old
        run/douglas.env

no changes added to commit (use "git add" and/or "git commit -a")
magicm@magicmirror:/opt/mm $ git switch develop
M       install/install.sh
branch 'develop' set up to track 'origin/develop'.
Switched to a new branch 'develop'
magicm@magicmirror:/opt/mm $ git pull
remote: Enumerating objects: 32, done.
remote: Counting objects: 100% (32/32), done.
remote: Compressing objects: 100% (22/22), done.
remote: Total 22 (delta 14), reused 0 (delta 0), pack-reused 0 (from 0)
Unpacking objects: 100% (22/22), 2.66 KiB | 247.00 KiB/s, done.
From https://gitlab.com/khassel/magicmirror
   f4542dd..4891458  develop    -> origin/develop
   a4a4748..c4bb59c  master     -> origin/master
 * [new tag]         v2.31.0    -> v2.31.0
Updating f4542dd..4891458
Fast-forward
 .gitlab-ci.yml            |  2 +-
 build/labwc/Dockerfile    |  2 +-
 build/labwc/entrypoint.sh | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++--------
 run/includes/labwc.yaml   |  4 +++-
 run/original.env          |  4 ++--
 5 files changed, 57 insertions(+), 13 deletions(-)
magicm@magicmirror:/opt/mm $ cd /opt/mm/run
magicm@magicmirror:/opt/mm/run $ docker compose pull
[+] Pulling 15/15
 ✔ labwc Pulled                                                                                                  107.9s
   ✔ f07a03696dcc Already exists                                                                                   0.0s
   ✔ 98d9f29a8bdf Pull complete                                                                                  106.0s
   ✔ 6c9aae6d02f4 Pull complete                                                                                  106.1s
   ✔ 9d496899b308 Pull complete                                                                                  106.2s
 ✔ magicmirror Pulled                                                                                            171.5s
   ✔ d9b636547744 Already exists                                                                                   0.0s
   ✔ 2fb5eed0caf7 Already exists                                                                                   0.0s
   ✔ f51205ec4ac4 Already exists                                                                                   0.0s
   ✔ d7b57be0135b Already exists                                                                                   0.0s
   ✔ 813d7d6819ab Already exists                                                                                   0.0s
   ✔ 9e1af87e1f78 Pull complete                                                                                    1.1s
   ✔ 27001e96a2b0 Pull complete                                                                                    1.3s
   ✔ deb26dbf1268 Pull complete                                                                                  110.8s
   ✔ 1b7abece8518 Pull complete                                                                                  169.7s
magicm@magicmirror:/opt/mm/run $ docker compose up -d --force-recreate
[+] Running 2/2
 ✔ Container labwc  Started                                                                                       24.9s
 ✔ Container mm     Started

Steve

@karsten13 I thought that would be the case. I tried changing the initial RANDR_PARAMS="--output HDMI-A-1 --transform 90" in the .env file to RANDR_PARAMS="--output HDMI-A-1 --off" so that the MMM-Universal-Pir module would be responsible for the first switch on of the display but then I got no display on restart at all.

Steve

@karsten13, thank you for this. It worked well overnight last night. One question: when the wlr-randr command fails, the labwc container is then killed and then automatically restarts - will the screen be turned on then until the next PIR activity and subsequent timeout of MMM-Universal-Pir?

Steve

@karsten13 the display failed today as before but we have timestamps in the labwc docker logs

magicm@magicmirror:~ $ docker logs labwc
00:00:00.000 [INFO] [seatd/seat.c:48] Created VT-bound seat seat0
00:00:00.000 [INFO] [seatd/seatd.c:194] seatd started
00:00:00.052 [INFO] [seatd/server.c:145] New client connected (pid: 17, uid: 1000, gid: 1000)
00:00:00.052 [INFO] [seatd/seat.c:239] Added client 1 to seat0
00:00:00.052 [INFO] [seatd/seat.c:563] Opened client 1 on seat0
00:00:00.120 [ERROR] [EGL] command: eglQueryDeviceStringEXT, error: EGL_BAD_PARAMETER (0x300c), message: "eglQueryDeviceStringEXT"
00:00:00.120 [ERROR] [EGL] command: eglQueryDeviceStringEXT, error: EGL_BAD_PARAMETER (0x300c), message: "eglQueryDeviceStringEXT"
executing: wlr-randr --output HDMI-A-1 --transform 90
Sat Mar 29 08:14:25 UTC 2025
HDMI-A-1 "Raspberry PI RPI MON156 81005568472 (HDMI-A-1)"
  Make: Raspberry PI
  Model: RPI MON156
  Serial: 81005568472
  Physical size: 350x190 mm
  Enabled: yes
  Modes:
    1920x1080 px, 60.000000 Hz (preferred, current)
    1920x1080 px, 60.000000 Hz
    1920x1080 px, 59.939999 Hz
    1920x1080 px, 50.000000 Hz
    1920x1080 px, 48.000000 Hz
    1920x1080 px, 47.952000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 59.939999 Hz
    1280x720 px, 50.000000 Hz
    1280x720 px, 48.000000 Hz
    1280x720 px, 47.952000 Hz
    720x576 px, 50.000000 Hz
    720x480 px, 60.000000 Hz
    720x480 px, 59.939999 Hz
    640x480 px, 60.000000 Hz
    640x480 px, 59.939999 Hz
    640x480 px, 59.939999 Hz
  Position: 0,0
  Transform: 90
  Scale: 1.000000
  Adaptive Sync: disabled
Sat Mar 29 08:29:25 UTC 2025
HDMI-A-1 "Raspberry PI RPI MON156 81005568472 (HDMI-A-1)"
  Make: Raspberry PI
  Model: RPI MON156
  Serial: 81005568472
  Physical size: 350x190 mm
  Enabled: yes
  Modes:
    1920x1080 px, 60.000000 Hz (preferred, current)
    1920x1080 px, 60.000000 Hz
    1920x1080 px, 59.939999 Hz
    1920x1080 px, 50.000000 Hz
    1920x1080 px, 48.000000 Hz
    1920x1080 px, 47.952000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 59.939999 Hz
    1280x720 px, 50.000000 Hz
    1280x720 px, 48.000000 Hz
    1280x720 px, 47.952000 Hz
    720x576 px, 50.000000 Hz
    720x480 px, 60.000000 Hz
    720x480 px, 59.939999 Hz
    640x480 px, 60.000000 Hz
    640x480 px, 59.939999 Hz
    640x480 px, 59.939999 Hz
  Position: 0,0
  Transform: 90
  Scale: 1.000000
  Adaptive Sync: disabled
  
  ...
  
Sat Mar 29 13:14:26 UTC 2025
HDMI-A-1 "Raspberry PI RPI MON156 81005568472 (HDMI-A-1)"
  Make: Raspberry PI
  Model: RPI MON156
  Serial: 81005568472
  Physical size: 350x190 mm
  Enabled: yes
  Modes:
    1920x1080 px, 60.000000 Hz (preferred, current)
    1920x1080 px, 60.000000 Hz
    1920x1080 px, 59.939999 Hz
    1920x1080 px, 50.000000 Hz
    1920x1080 px, 48.000000 Hz
    1920x1080 px, 47.952000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 59.939999 Hz
    1280x720 px, 50.000000 Hz
    1280x720 px, 48.000000 Hz
    1280x720 px, 47.952000 Hz
    720x576 px, 50.000000 Hz
    720x480 px, 60.000000 Hz
    720x480 px, 59.939999 Hz
    640x480 px, 60.000000 Hz
    640x480 px, 59.939999 Hz
    640x480 px, 59.939999 Hz
  Position: 0,0
  Transform: 90
  Scale: 1.000000
  Adaptive Sync: disabled
Sat Mar 29 13:29:26 UTC 2025
failed to connect to display
Sat Mar 29 13:44:26 UTC 2025
failed to connect to display
Sat Mar 29 13:59:26 UTC 2025
failed to connect to display
Sat Mar 29 14:14:26 UTC 2025
failed to connect to display
Sat Mar 29 14:29:26 UTC 2025
failed to connect to display
Sat Mar 29 14:44:26 UTC 2025
failed to connect to display
Sat Mar 29 14:59:26 UTC 2025
failed to connect to display
Sat Mar 29 15:14:26 UTC 2025
failed to connect to display
Sat Mar 29 15:29:26 UTC 2025
failed to connect to display
Sat Mar 29 15:44:26 UTC 2025
failed to connect to display
Sat Mar 29 15:59:26 UTC 2025
failed to connect to display
Sat Mar 29 16:14:26 UTC 2025
failed to connect to display

There's also a new item in the `mm` docker logs when I restarted the docker containers on my return
Gdk-Message: 16:25:24.348: Error reading events from display: Broken pipe
[entrypoint 16:25:25.533] [INFO]   ***WARNING*** could write to /etc/localtime
[entrypoint 16:25:25.539] [INFO]   copy default modules
[entrypoint 16:25:25.603] [INFO]   copy css files

Steve

@karsten13 my apologies, I see the transform is not needed as you have taken the rotation into account

@karsten13 I left it running overnight with the MMM-Universal-Pir config lines commented out and the monitor physically switched off and this morning MM was still working fine when I switched the monitor back on again. When I looked at docker logs labwc the wlr-randr command was failing (still being triggered every fifteen mins) which suggests the connection between the MMM-Universal-Pir and the display driver is the issue rather than the display actually going off. I will try your new build today although i will have to add --transform 90 to the onCommand to get my screen rotation.

magicm@magicmirror:/opt/mm/mounts/config $ docker logs labwc
HDMI-A-1 "Raspberry PI RPI MON156 81005568472 (HDMI-A-1)"
  Make: Raspberry PI
  Model: RPI MON156
  Serial: 81005568472
  Physical size: 350x190 mm
  Enabled: yes
  Modes:
    1920x1080 px, 60.000000 Hz (preferred, current)
    1920x1080 px, 60.000000 Hz
    1920x1080 px, 59.939999 Hz
    1920x1080 px, 50.000000 Hz
    1920x1080 px, 48.000000 Hz
    1920x1080 px, 47.952000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 60.000000 Hz
    1280x720 px, 59.939999 Hz
    1280x720 px, 50.000000 Hz
    1280x720 px, 48.000000 Hz
    1280x720 px, 47.952000 Hz
    720x576 px, 50.000000 Hz
    720x480 px, 60.000000 Hz
    720x480 px, 59.939999 Hz
    640x480 px, 60.000000 Hz
    640x480 px, 59.939999 Hz
    640x480 px, 59.939999 Hz
  Position: 0,0
  Transform: 90
  Scale: 1.000000
  Adaptive Sync: disabled
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
failed to connect to display
magicm@magicmirror:/opt/mm/mounts/config $ docker exec -it labwc bash
pi@c7c64f70849e:/$ wlr-randr
failed to connect to display
pi@c7c64f70849e:/$

Steve

@karsten13 unfortunately that change did not prevent the display from dropping. There’s no time timestamp in the docker logs for labwc but when i looked this morning there were some 40 calls to wlr-randr that had failed. If they are every 15mins that’s about 10:00 it failed. I will make a more accurate observation tonight

@karsten13 i have disabled the init container as suggested.

When the display fails I can get it back with docker rm -f labwc && docker compose up -d (docker compose up -d --force-recreate also works but docker compose up -d on it’s own doesn’t). I am running it today with the MMM-Universal-Pir module disabled as another test (although when sitting at a login prompt it never went off).

Note that the display fails after a few hours of no PIR trigger, it doesn’t have to be overnight.

Steve