[linux-dvb] Terratec Cinergy Piranha tuning (again)

Erich N. Pekarek epek at gmx.net
Tue Jun 22 11:08:54 CEST 2010


> From: BOUWSMA Barry <freebeer.bouwsma at gmail.com>
> > Symptoms: Stick gets recognized, firmware gets loaded, frontend gets
> loaded.
> 
> I see something a bit different --
> [62890.938154] usb 4-2.1: firmware: requesting dvbt_bda_stellar_usb.inp
> [62894.338892] usbcore: registered new interface driver smsusb
> [62894.467939] usb 4-2.1: USB disconnect, address 4
> [62896.753324] usb 4-2.1: New USB device found, idVendor=187f,
> idProduct=0100
> 
> That is, no frontend gets loaded for me.  So, no tuning.  The
> other two devices attached at the moment both work properly.

Yes, that problem sounds familiar - see my comment on this below, please.

> Plus I'll have to see what changes I need to get the DAB support
> from Siano working properly, as I hadn't done that yet with the
> 2.6.34-rc2 kernel.

I can't help in that case, since, up to my knowlegde, in favour to dvb-t radio there is no dab-radio in Austria.

> thanks,
> barry bouwsma

Comment on the frontend loading issue:

This is my dmesg...

[30256.700149] usb 6-1: new full speed USB device using uhci_hcd and address 2
[30256.861399] usb 6-1: configuration #1 chosen from 1 choice
[30257.339156] smsusb_probe: line: 422: rom interface 0 is not used
[30257.342174] usb 6-1: firmware: requesting dvbt_bda_stellar_usb.inp
[30257.483485] usbcore: registered new interface driver smsusb
[30257.540221] usb 6-1: USB disconnect, address 2
[30260.050077] usb 6-1: new full speed USB device using uhci_hcd and address 3
[30260.224132] usb 6-1: configuration #1 chosen from 1 choice
[30260.233362] DVB: registering new adapter (Siano Stellar Digital Receiver)
[30260.233828] DVB: registering adapter 0 frontend 0 (Siano Mobile Digital MDTV Receiver)...

Of course I am using the original ".inp"-Microcode, which I previously copied to /lib/firmware/`uname -r`/dvbt_bda_stellar_usb.inp

Since the autoload of the interface seems to have been forgotten within the source code itself, I created /etc/modprobe.d/siano.conf with the following line:

install smsusb /sbin/modprobe --ignore-install smsusb && /sbin/modprobe --ignore-install smsdvb

I hope this is the right way to do it and does not cause other problems.

I once repeat: the dvb-device is accessible, but the signal and snr levels stay at "0" permanently.
I remember, that a similar problem occurred in the siano-dev branch before. Mkrufky had a patch addressing this issue in former versions (adapted for 2.6.8-to 2.6.18), but it eventually did not find it's way into the repository.

Unfortunately, I do not possess a copy of the ancient patch file any longer.

Thanks for your reply and
best regards

Erich
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