Solved Failed to open IO device error after installing Raspbian updates

[curieos]

I updated the packages via apt this morning on a machine in SBC mode, and after restarting the Pi I'm getting this error:

The setup is two 6XDs and two 1LCs. The Pi is a Pi 5 running the bookworm image from April 19th. Fully rebooting the machine (cutting power) does not work.

[Phaedrux]

I'd backup your configs and try flashing a freshly downloaded DuetPi image.

[gloomyandy]

@Phaedrux Another user reported a similar problem and found a possible solution: https://forum.duet3d.com/topic/36515/just-upgraded-sbc-duet-6hc-now-have-error-connecting

[p8blr]

@curieos Hey I had this error on my last try to image my rpi 5

https://forum.duet3d.com/topic/36442/firmware-update-bricked-printer-spi-connection-has-been-reset/16

[chrishamm]

@curieos @p8blr I had a chance to look at it today and it appears the new RPi 5 kernel brings the pin mapping in-line again with previous RPi versions. That means the gpiochip device and pin number are now incompatible on the Raspberry Pi 5.

To fix this problem, log into your Pi via SSH or Linux terminal and run sudo rm /opt/dsf/conf/config.json. After a few seconds, DSF should come back up again.

[curieos]

@chrishamm Will this be fixed in a DSF update? We'd like to know if our customers will have this issue if they update in the future.

[chrishamm]

@curieos I'm about to build new DuetPi images. If your customers use only M997 S2 to install DSF updates, they won't encounter this problem. If they use apt for updates, the one-liner above will be necessary.

[p8blr]

@chrishamm can confirm this works.

sudo apt update
sudo apt full-upgrade
sudo rm /opt/dsf/conf/config.json
sudo systemctl reboot

[curieos]

@chrishamm When will the new duet pi images be available?

[chrishamm]

@curieos I've got new builds ready for testing, please DM me if you wish to try them as well (with 3.5.2). I expect they'll be public sometime next week.