[linux-dvb] freecom usb2 dvb-t device

Anthony Kenworthy antken at antken.co.uk
Sat Feb 11 17:53:37 CET 2006

has anyone managed to get a freecom dvb-t usb2 going properly?

Everytime i tune the device to try to watch tv the device restarts and 
the tuning program ( tzap ) says the device has a positive lock on the 

But if i ctrl-C tzap to attempt to re-start the process the system will 
either hang or cause an OOPs to occur. If an OOPs occurs the process is 
show in device wait status.
Attempting to use another program to do this ( such as xine ) terminates 
itsself and causes an oops.

Has anyone got this device going on there machine, If so what kernel 
were you using and if possible with what options. I am using slackware 
10.1 with kernel

this is the oops i got when using xine to acess the device:
dvb-usb: found a 'WideView WT-220U PenType Receiver (Typhoon/Freecom)' 
in warm state.
dvb-usb: will use the device's hardware PID filter (table count: 15).
DVB: registering new adapter (WideView WT-220U PenType Receiver 
DVB: registering frontend 0 (WideView USB DVB-T)...
input: IR-receiver inside an USB DVB receiver as /class/input/input4
dvb-usb: schedule remote query interval to 300 msecs.
dvb-usb: WideView WT-220U PenType Receiver (Typhoon/Freecom) 
successfully initialized and connected.
Unable to handle kernel NULL pointer dereference at virtual address 00000003
 printing eip:
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: ttusb_dec ttusbdecfe dvb_usb_dtt200u dvb_usb ohci_hcd 
ehci_hcd pcspkr uhci_hcd usbcore
CPU:    0
EIP:    0060:[<c012f448>]    Not tainted VLI
EFLAGS: 00010002   (
EIP is at add_wait_queue+0x24/0x5e
eax: dd8171f4   ebx: d9517018   ecx: da7aa000   edx: d951700c
esi: ffffffff   edi: 00000246   ebp: 00000000   esp: da7abefc
ds: 007b   es: 007b   ss: 0068
Process xine (pid: 3298, threadinfo=da7aa000 task=da1aaa90)
Stack: dd8171c4 dd0e7b80 da7abf98 c0310576 dd0e7b80 dd8171f4 da7abf98 
       db2a0508 dd0e7b80 00000000 c016fc55 dd0e7b80 da7abf98 db2a0500 
       da7abf60 00003a99 c016fcba 00000001 db2a0508 da7abf5c da7abf60 
Call Trace:
 [<c0310576>] dvb_dvr_poll+0x44/0x95
 [<c016fc55>] do_pollfd+0x8c/0x90
 [<c016fcba>] do_poll+0x61/0xc0
 [<c016fe80>] sys_poll+0x167/0x233
 [<c010251d>] sys_sigreturn+0xbe/0xd0
 [<c016f305>] __pollwait+0x0/0xc6
 [<c0102fa5>] syscall_call+0x7/0xb
Code: ba 39 00 eb bd 90 90 83 ec 0c 89 1c 24 89 74 24 04 89 7c 24 08 83 
22 fe 9c 5f fa b9 00 e0 ff ff 21 e1 83 41 14 01 8d 5a 0c 8b 30 <89> 5e 
04 89 72 0c 89 43 04 89 18 57 9d 83 69 14 01 8b 41 08 a8
 <6>note: xine[3298] exited with preempt_count 1
Unable to handle kernel paging request at virtual address 016bc8f0
 printing eip:
*pde = 00000000
Oops: 0002 [#2]
Modules linked in: ttusb_dec ttusbdecfe dvb_usb_dtt200u dvb_usb ohci_hcd 
ehci_hcd pcspkr uhci_hcd usbcore
CPU:    0
EIP:    0060:[<c0316784>]    Not tainted VLI
EFLAGS: 00010202   (
EIP is at dvb_frontend_release+0x34/0x6c
eax: ffffb5ed   ebx: dd0e7180   ecx: dd7c0c40   edx: c0316750
esi: 016bc740   edi: dd75555c   ebp: dd7c0c40   esp: dd0cde14
ds: 007b   es: 007b   ss: 0068
Process xine (pid: 3198, threadinfo=dd0cc000 task=dd9a35a0)
Stack: 00000008 00000008 00000008 dd0e7180 dd75555c c015cc8f dd75555c 
       00000000 00000000 e37e4e20 dd0e7180 e36c7ac0 00000000 dc89b320 
       dd0e7180 e36c7ac0 ffffffff 00000000 00000000 c011cfd9 dd0e7180 
Call Trace:
 [<c015cc8f>] __fput+0x16a/0x17c
 [<c015b169>] filp_close+0x4d/0x79
 [<c011cfd9>] put_files_struct+0x8f/0xcb
 [<c011dc6a>] do_exit+0x12a/0x42f
 [<c011dfd6>] do_group_exit+0x38/0xa1
 [<c0127000>] get_signal_to_deliver+0x204/0x304
 [<c0102dbf>] do_signal+0x91/0x115
 [<c04cb48e>] preempt_schedule+0x4a/0x6b
 [<c0126048>] kill_proc_info+0x6b/0x6d
 [<c011824a>] default_wake_function+0x0/0x12
 [<c016ff13>] sys_poll+0x1fa/0x233
 [<c011eed5>] sys_wait4+0x3f/0x43
 [<c0102e78>] do_notify_resume+0x35/0x39
 [<c0103036>] work_notifysig+0x13/0x19
Code: 24 10 89 74 24 0c 8b 5c 24 1c 8b 7c 24 18 8b 43 74 8b 40 28 8b 70 
0c a1 d0 3c 68 c0 85 c0 75 2d f6 43 18 03 74 0b a1 58 61 59 c0 <89> 86 
b0 01 00 00 89 5c 24 1c 89 7c 24 18 8b 74 24 0c 8b 5c 24
 <1>Fixing recursive fault but reboot is needed!
dvb-usb: recv bulk message failed: -110

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