Haptic fails to rumble after stdout is used by another call

[geniot]

I'm using SDL2 bindings for GoLang. I'm also cross compiling for a MIPS device (PocketGo handheld console). Strangely when I use stdout haptic stops working. Eg.:

		cmd := exec.Command("amixer", "sget", "Master")
		res, _ := cmd.Output()

It seems that haptic's implementation depends on the usage of stdout. Is there a suggested way to deal with that?