http://askubuntu.com/questions/291571/touchscreen-recognized-but-not-working-in-13-04
Two users with similar 'inconsistent' behavior until we discovered that closing the lid (therefore, for that user, going into 'Suspend' mode) or a manual 'Suspend,' was resolving the issue.
http:// askubuntu. com/questions/ 291571/ touchscreen- recognized- but-not- working- in-13-04
Two users with similar 'inconsistent' behavior until we discovered that closing the lid (therefore, for that user, going into 'Suspend' mode) or a manual 'Suspend,' was resolving the issue.