Blank screens are back with last firmware


I recently updated to 3.12.9 and unfortunately, weird behaviour at startup is back (one or two blank screens randomly). The problem was totally gone in 3.12.8.

Just to confirm, are you referring to the issue where the LCDs boot up blank, but a restart fixes it?

Yes exactly. Blank screens on first power-up.
Was not a problem anymore in the previous update.

Thanks for the info.

Ok short story, so this problem was hard to fix because it was randomly happening to some users. The latest firmware reduced that number of users affected to a very small number. We managed to get a unit back from one of these users last week, and managed to replicate the problem and finally pinpointed the problem and solution.

We’ll release an official firmware early next week, but in the meantime, can you try this firmware?
2024-04-12_MC6_PRO_Firmware_v_3_12_9_LCD_FIX_TEST.hex (1.3 MB)
If you do give it a go, please let me know if the issue persists for you.

Tried 5 times without problem, so i’d say it’s either gone or at least very rare (usually it was 100% error at start).
Nice job ! Apparently you found a way to turn of the screens completely after power, cause i see them switching off one by one, left to right, before the start.