DragonRise USB Driver Issue

[DancingPigeon]

I've posted about this here, but it's an issue more broad than RetroPie:

https://github.com/libretro/retroarch-joypad-autoconfig/blob/master/udev/DragonRise_Inc.___Generic___USB__Joystick__.cfg

Note that the linux kernel driver for this controller was broken from
kernel 4.4 until 4.9. With the broken driver the joystick axes
numbers will be off. This can be fixed by reverting commit
18339f5 and rebuilding hid-dr.ko.

[pelwell]

Since the reversion is already upstreamed I've backported it to rpi-4.4.y and rpi-4.8.y.

[DancingPigeon]

Fantastic- thank you.

[jangeador]

How can I apply this fix to a system?

[popcornmix]

You can use rpi-update to get the latest testing firmware/kernel which does include this fix.
But be aware that rpi-update firmware/kernel has latest changes in and could have regressions.
The apt-get kernel will be updated at some point (typically every month or two).

[DancingPigeon]

That explains why apt-get update didn't fix it for me :)

I will run rpi-update sometime in the next few days (after backing up) and report back.1

[DancingPigeon]

The axes are now fixed, unfortunately Y axis movement is still binary.

[popcornmix]

@DancingPigeon if there are upstream commits that improve this, then we can consider cherry-picking. If not then it sounds like a problem best reported upstream.

[DancingPigeon]

@popcornmix I'll look into it. Cheers.