[linux-dvb] Dposh DVB-T USB2.0(ULi M9207) initialising OK but no response from scan

Antti Palosaari crope at iki.fi
Wed Jul 2 13:51:14 CEST 2008

terve Andrew,
Andrew Websdale wrote:
> Hi All,
> I've been trying to amend the M920x driver to cope with the MT2060 
> tuner. My dmesg output looks encouraging :
> usb 5-1: new high speed USB device using ehci_hcd and address 5
> usb 5-1: configuration #1 chosen from 1 choice
> Probing for m920x device at interface 0
> dvb-usb: found a 'Dposh(mt2060 tuner) DVB-T USB2.0' in warm state.
> dvb-usb: will pass the complete MPEG2 transport stream to the software 
> demuxer.
> DVB: registering new adapter (Dposh(mt2060 tuner) DVB-T USB2.0)
> m920x_mt352_frontend_attach
> DVB: registering frontend 0 (Zarlink MT352 DVB-T)...
> m920x_mt2060_tuner_attach
> MT2060: successfully identified (IF1 = 1220)
> dvb-usb: Dposh(mt2060 tuner) DVB-T USB2.0 successfully initialized and 
> connected.
> but scanning produces no result. I thought it might be the firmware so I 
> used USBSnoop ( ver 2.0 from here 
> <http://www.pcausa.com/Utilities/UsbSnoop/SniffUSB-x86-2.0.0006.zip>  , 
> I think its slightly easier to use than the original) and extracted a 
> new firmware file (attached) . The firmware loaded without complaint, 
> but still no scan result. I'm a bit stuck now, anyone got any 
> suggestions as to how I should proceed?

I have following list to check:
1) firmware (you tested this one already)
2) demodulator (it is MT352 I think, but configuration / settings could 
be wrong)
3) wrong endpoint used for mpeg ts

I can help if you take sniffs with usbsnoop, but hopefully you will find 
error yourself.


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