[linux-dvb] Tuning Problems With Hauppauge dec2000t

[Stefan weidt <stefan@sweidt.force9.co.uk>]

I'm trying to set up my dec2000t in Linux and I seem to have compiled the driver successfully but I'm having trouble getting it to scan for channels.

I'm using the driver compiled as a module from 2.6-test11 kernel (and I've also tried using 2.4.22 with CVS sources with the same results). I've placed the firmware file to /etc/dvb/dec2000t.bin and the modules compiled OK.

Here are the three modules I compiled and loaded:
dec2000_frontend, ttusb_dec and dvb_core 

Heres the output from dmesg when I load the modules: 

DVB: registering new adapter (dec2000).
drivers/usb/core/usb.c: registered new driver TechnoTrend/Hauppauge DEC USB
usb 1-2: USB disconnect, address 2
hub 1-0:1.0: new USB device on port 2, assigned address 3
DVB: registering new adapter (dec2000).
DVB: registering frontend 0:0 (TechnoTrend/Hauppauge DEC-2000-t Frontend)...

I downloaded the CVS version of DVB and compiled scan. When I try to follow the README to scan for channels this is what I get:

./scan dvb-t/uk-BlackHill |tee mychannels.conf 

scanning dvb-t/uk-BlackHill
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
Frontend can not do INVERSION_AUTO, trying INVERSION_OFF instead
initial transponder 634167000 0 2 0 3 0 0 0
>>> tune to: 634167000:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
start_filter:1083: ERROR: ioctl DMX_SET_FILTER failed: 22 Invalid argument
start_filter:1083: ERROR: ioctl DMX_SET_FILTER failed: 22 Invalid argument
WARNING: filter timeout pid 0x0000
start_filter:1083: ERROR: ioctl DMX_SET_FILTER failed: 22 Invalid argument
WARNING: filter timeout pid 0x0011
WARNING: filter timeout pid 0x0010
dumping lists (0 services)
Done.

or if I try and use CVS dvbtune to tune to a specific frequency:

./dvbtune -f 570000000
Using DVB card "TechnoTrend/Hauppauge DEC-2000-t Frontend"
tuning DVB-T (in United Kingdom) to 570000000 Hz
polling....
Getting frontend event
FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI FE_HAS_SYNC
Bit error rate: 0
Signal strength: 255
SNR: 0
FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI FE_HAS_SYNC

dmesg tells me this:

usb 1-2: bulk timeout on ep4in
ttusb_dec_send_command: result bulk message failed: error -110

Any help or advice would be much appreciated. 

Thanks

-- 
Stefan Weidt



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