Lego EV3 robot with fw 1.10e cannot be mounted as usb drive

[asokero]

The latest firmware upgrade from Lego should make it possible to mount the EV3 brick as a usb device. This seems to work on the Ubuntu Trusty based system and with legacy kernel on Strech device images.

If this would work it would be possible to use the Microsoft Makecode service to program the lego robots.

https://makecode.mindstorms.com/

[asokero]

microsoft/pxt-ev3#980

[asokero]

c4ev3/ev3duder#31

[Mazhoon]

Fixed in bullseye with 16b7c94 .
As the filesystem presented by the device is virtual, we can safely ignore any errors and keep using the drive without remounting read-only. The required setting is only available in recent udisks2 versions, and this fix is therefore not applicable in buster-based systems.