Atenção usuários de email com anti-spam (Uol e Bol).
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hubBus 001 Device 002: ID 03f0:2d4a Hewlett-Packard Bus 001 Device 004: ID 8087:0a2a Intel Corp. Bus 001 Device 003: ID 03f0:1198 Hewlett-Packard HID-compliant mouseBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Tem a certeza de que conectou o cabo USB? A webcam é independente do monitor propriamente dito.