How to access a device with Arduino IDE Flatpak

Question

I've installed Arduino IDE (1.8.5) with Flatpak (Kubuntu 18.04).

Attached my Wemos D1 Mini to the USB port, but can't upload a sketch:

An error occurred while uploading the sketch
error: cannot access /dev/ttyUSB0

Seems a bit silly that an IDE for a device in Flatpak can't access a device out of the box.

How do I fix that?

This question is about Flatpak.

What additional action is necessary to get the Flatpak version of Arduino IDE working with a device?

(IMHO Flatpak needs to provide additional info/help in some way, installing with Ubuntu Make umake seems easier.)

what does ls -l /dev/ttyUSB0 tell us? you might need to be in the dialout group — Joshua Besneatte, Sep 16 '18 at 16:50
Possible duplicate of How to install latest Arduino IDE? (you need to execute sudo usermod -a -G dialout $USER). — N0rbert, Sep 16 '18 at 17:06
@Joshua. I'm already a member of the dialout group members dialout shows my username. — Janghou, Sep 16 '18 at 18:31
Thx. I got it working by installing the IDE with Ubuntu Make umake ide arduino and logout/login. — Janghou, Sep 16 '18 at 18:39

score 2 · Answer 1 · edited Aug 14 '20 at 23:59

The problem is that the app starts with flatpak and that by default blocks devices. See Accessing Serial Ports with an Application Runs in Flatpak by adding --device=all you get it work, but see comments on link.

Most likely that's because Flatpak is blocking access to the serial device.

Unfortunately at the moment I don't think there is a way to give access specifically to the serial devices, so you'd need to give access to all:
flatpak run --device=all com.xamarin.MonoDevelop
What this does is essentially mount the host's /dev inside the sandbox, so the app has full access to it.

How to access a device with Arduino IDE Flatpak

1 Answers1