When starting as a daemon from systemd, no images are shown until first plugin timesout

[txoof]

When starting from systemd at boot, PaperPi may fail to show the splash screen and the first module. This is due to a NoneType object being passed to the epdWrite() function.

This has been exceptionally difficult to debug because it only happens at boot time from systemd. When started from the command line, this problem does not manifest.

Logging shows the image is generated, but fails to pass to the epdWrite() function.

Any help in solving this would be greatly appreciated.

[txoof]

resolved by rewriting display loop

[txoof]

added force_update method to 'Plugins' class; call this during the first run of the plugin_update in the display loop appears to fix this problem.

It's unclear why this is a problem only when running in daemon mode.

Probably best solution is to rewrite the Plugin class to better update on init and ensure there is always some image available.

[txoof]

fixed in commit 136a333