Pinecil v2 doesn't boot on Baseus Blade 100w 20 000 mAh

[mmaciejak]

Describe the bug
When trying to power the device through the Baseus Blade 100w 20 000 mAh powerbank, screen of the Pinencil stays black, sames happen when trying to boot in debug mode by holding the plus button while plugging the device in. Powerbank briefly displays 5V 0A on it's screen. Powerbank works fine with other devices, some as cable (Baseus 100W USB C). Pinencil also works fine when powered through Baseus 65W charger and boots normally when powered through PC USB C port

Details of your device:

• Device: [Pinecil V2]
• Release: [2.22.E.C0A5E244], same behaviour was present with 2.20 before upgrading

Additional context
Tried updating from 2.20 to 2.22 RC2, and changing PD timeout from 1-50 by 5 step and turning it off as well as turning off PD VPO

[Ralim]

Hia,
Really the main thing to help debug this would be a capture of the USB-PD traffic. Without that I'm guessing to be quite honest.
If you connect the Pinecil while holding the rear button (programming) does the power supply "start up" (though of course Iron will stay turned off)?

[mmaciejak]

Hey @Ralim,
I just tried and by holding the minus button when plugging in, exactly the same thing happens. Powerbank briefly displays 5V 0A and then it seems to turn off. I don't have any hardware to capture PD traffic, unfortunately.

I also tried powering the iron through USB A port of the same power bank with some off-brand USB A to USB C cable and it gives mixed results sometimes the iron stays at 5 V and sometimes it seems to negotiate successfully for 9V, obviously, it is not operating normally on 9V but starts heating up. Also when powered through USB A port and pencil is left idle the power bank seems to kill the charging frequently. The pencil flashes the electric plug symbol, and it sporadically reboots, I tried to see if adjusting the power pulse settings would help, and it somehow helps but even on the highest settings, when the tip gets over 100°C on idle it still reboots sporadically on idle.