@bhepler Any continuation on this discussion? I’m in the same situation. Running Raspbian Debian GNU/Linux 13 (trixie) on Pi 4b, HDMI tv screen and there’s no Screen Configuration under Rpi Menu | Preferences.

I updated timeFormat: 12, in config.js and ran pm2 restart mm and it shows online.
npm run config:check returns

[2026-04-09 10:00:53.379] [LOG]   [utils] Loading config ...
[2026-04-09 10:00:53.394] [INFO]  [utils] Checking config file /home/pi/MagicMirror/config/config.js ...
[2026-04-09 10:00:53.581] [INFO]  [utils] Your configuration file doesn't contain syntax errors :)
[2026-04-09 10:00:53.582] [INFO]  [utils] Checking modules structure configuration ...
[2026-04-09 10:00:53.742] [INFO]  [utils] Your modules structure configuration doesn't contain errors :)

But any changes I make to config.js are not taking place. What could be wrong?

Use --update-env to update environment variables
[PM2] Applying action restartProcessId on app [mm](ids: [ 0 ])
[PM2] [mm](0) ✓
┌────┬───────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name  │ namespace   │ version │ mode    │ pid      │ uptime │ ↺    │ status    │ cpu      │ mem      │ user     │ watching │
├────┼───────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0  │ mm    │ default     │ N/A     │ fork    │ 8787     │ 0s     │ 105  │ online    │ 0%       │ 2.6mb    │ pi       │ disabled │