Primeiro veja as últimas saídas do dmesg sem o pen hdtv:
[ 22.597302] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 103.546173] wlan0: deauthenticating from 00:1a:3f:4b:50:8b by local choice (reason=3)
[ 103.546505] wlan0: authenticate with 00:1a:3f:4b:50:8b (try 1)
[ 103.548938] wlan0: authenticated
[ 103.548993] wlan0: associate with 00:1a:3f:4b:50:8b (try 1)
[ 103.552927] wlan0: RX AssocResp from 00:1a:3f:4b:50:8b (capab=0x451 status=0 aid=1)
[ 103.552936] wlan0: associated
[ 103.555950] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 104.579784] Intel AES-NI instructions are not detected.
[ 104.603342] padlock: VIA PadLock not detected.
[ 111.725094] process `skype' is using obsolete setsockopt SO_BSDCOMPAT
[ 114.460058] wlan0: no IPv6 routers present
nogueira@nogueira-dell:~$
Agora a saída do dmesg com o pen hdtv plugado:
[ 103.552936] wlan0: associated
[ 103.555950] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 104.579784] Intel AES-NI instructions are not detected.
[ 104.603342] padlock: VIA PadLock not detected.
[ 111.725094] process `skype' is using obsolete setsockopt SO_BSDCOMPAT
[ 114.460058] wlan0: no IPv6 routers present
[16868.508875] atkbd.c: Unknown key pressed (translated set 2, code 0x8d on isa0060/serio0).
[16868.508884] atkbd.c: Use 'setkeycodes e00d <keycode>' to make it known.
[16876.040196] usb 2-2: new high speed USB device using ehci_hcd and address 3
[16876.194938] usb 2-2: configuration #1 chosen from 1 choice
nogueira@nogueira-dell:~$
Espero que ajude a me ajudar.