My USB touch verification does not have this issue. You only need to follow the link below to solve your touch problem.
If you still have problems after verification, please download test002.wa file and execute the following command to check.
kedge2:/ # tinypcminfo -D 4
kedge2:/ # tinyplay test002.wav -D 4
Playing sample: 2 ch, 44100 hz, 16 bit 53338656 bytes