Mcu 'mcu': Unable to connect after power cycle

I’ve had Klipper/Fluidd running for about a month with no major hiccups until now.

The printer got power cycled (which has happened before without issue) and now

mcu ‘mcu’: Unable to connect
Once the underlying issue is corrected, use the
“FIRMWARE_RESTART” command to reset the firmware, reload the
config, and restart the host software.
Error configuring printer

klippy.log (69.3 KB)
Line 244 has
ls: cannot access ‘/dev/serial/by-id/*’: No such file or directory

Tried lsusb
Bus 001 Device 005: ID 046d:0843 Logitech, Inc. Webcam C930e
Bus 001 Device 004: ID 0424:7800 Standard Microsystems Corp.
Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Not really sure where to go from here…

I decided to try and reflash, but am stuck again. Can’t connect still so I can’t flash from the pi. Since it’s a “common” board atmega2560, there is no bin file being created that I can copy to an sd card.

Figured it out kind of

Updated everything on Klipper
Powered down the printer.
Plugged the pi into the printer which powered up the board
Was able to reconnect and reflash to update everything on the board

Everything connects again