Category: Linux

Major pigeon droppings

I’ve been running the dovecot mail server for many years now without encountering any significant issue. Configure once, run forever. But as with almost every other good project these days, there comes the time when the devs just decide to mess things up. In the case of dovecot, a new minor version 2.4 followed upon 2.3, just as you would…

CAN bus on Banana Pi M2 Berry

The BPI M2 Berry is based on the Allwinner V40 chip, which includes a CAN controller. Unfortunately, the CAN pins are not exposed on the PCB, but used for connecting LEDs and Ethernet instead. In order to make the CAN bus work on BPI M2B, the following steps are required: Hardware modification Kernel patching Device tree overlay Hardware modification The…