mouse input possibly being disabled when launching emulators on arch linux

[agent4125]

My arcade cabinet has 2 USB TurboTwist2 Spinners connected. I'm running groovymame as the executable on Arch Linux (GroovyArcade CD install).

When launching groovymame directly from a bash terminal (from the LXDE desktop), e.g.
groovymame outrunb
I can press TAB in groovymame and assign the spinner to dial inputs no problem. They come up as Mouse1Y, Mouse1X when I move the spinners.

When launching groovymame through another frontend (AdvanceMENUPlus) installed on the same Arch Linux/GroovyArcade setup, again I can assign the dial inputs by moving my spinners with no problems.

When launching groovymame through attractmode installed on GroovyArcade, the TurboTwist2 spinners are not recognised when they are moved.

I believe this is an attractmode issue (when running on Arch Linux) because: -

1. spinners work in groovymame when running directly from bash terminal
2. spinners work in groovymame when running directly from AdvanceMENUPlus frontend
3. spinners (or a connected mouse) do NOT work in groovymame when running directly from attractmode
4. groovymame's verbose debug output is identical in all the above 3 cases (attached)

attract.txt

I'm running Attract-Mode v2.2.1-43 (Linux)