[linux-dvb] Re: DEC2540-T (again)

[Alex Woods <linux-dvb@giblets.org>]

On Monday 12 January 2004 7:23 pm, Martijn van de Streek wrote:
> On Mon, 12 Jan 2004, Alex Woods wrote:
> > > Using the _X firmware, I get:
> > > Jan 12 00:50:35 messy kernel: ttusb_dec_init_stb: unknown model
> > > returned by firm ware (70011) - please report
> >
> > No problem.  That result sounds promising anyway.  I've added it to
> > the driver in CVS so that it knows that the device is a 2540-t.
> > Please, check it out and give it a go.
>
> Next problem ;)
>
> I can tune using "tzap" -- or at least, I think I can... it gives me
> lines like:
>
> status 1f | signal 00ff | snr 0000 | ber 00000000 | unc 00000000 |
> FE_HAS_LOCK
>
> But there's no data on /dev/dvb/adapter0/dvr0 (which I created using Roland
> Gersch's directions on http://www.roland-gersch.de/dec2000/node6.html), and
> the TV screen is black.
>

Make sure you use tzap with the -r option to get output 
on /dev/dvb/adapter0/dvr0.  The TV screen should show when the box has tuned 
successfully though.

> 0x00 0x00 0xFF 0x00 0x00 0x00 0xFF Jan 12 20:17:34 messy kernel: usb 2-2:
> bulk timeout on ep4in
> Jan 12 20:17:34 messy kernel: ttusb_dec_send_command: result bulk message
> failed: error -110

For some reason I've been unable to figure out yet, changing the usb interface 
setting (required to put it into streaming mode), causes the next usb command 
to timeout.  On 2.6, the usb interface change occurs right after the box is 
detected after the reboot, so the first tzap always fails.  Kill it and try 
again.  What USB chipset do you have by the way?  I'm curious whether it 
affects all of them or not - it will help me narrow it down to a USB protocol 
error or DEC protocol error.

Cheers,
Alex



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