@Martin, you're right. Thank you for the tip about deleting that file - it fixed it for me too. Now it works even after power-cycling my USB hub, which it didn't when using only xsetwacom.
@Martin, you're right. Thank you for the tip about deleting that file - it fixed it for me too. Now it works even after power-cycling my USB hub, which it didn't when using only xsetwacom.