A1 runs a partial filament-load / purge on the first print after every full power cycle (since firmware update)
Since a recent firmware update, my A1 does something odd on the first print after a full power off:
- I switch the printer fully off with the rear power switch.
- On the next boot, when I start the first print, it behaves as if filament was just loaded. It pauses, asks me to confirm whether filament is extruded, then runs a purge before continuing.
- After I confirm, the print continues normally.
- Every following print in that same session is fine: no prompt, no extra purge.
- It only comes back after another full power off and on.
So it is tied to a cold boot, not to individual prints. The filament is loaded the whole time and never physically changes.
Setup:
- Printer: Bambu Lab A1
- Firmware: latest
- Slicer: Bambu Studio
Questions:
- Anyone else seeing this after the latest firmware?
- Is it a known bug or intended behavior after a power cycle?
- Any setting or workaround to stop the confirmation prompt and purge on cold boot, short of never fully powering off?
Thanks.