[linux-dvb] Most probably broken Twinhan FTA-Card ?!
abraham.manu at gmail.com
Sat Dec 3 21:35:14 CET 2005
Martin Cap wrote:
> Hi list,
> I have a strange problem with my Twinhan DVB-T-FTA-card ("Hama DVB-T
> PCI-Card") that makes me believe my card broke. The problem persists
> for approx. 1 year now, but I'm too busy (or lazy ;) ) to dig deeper
> into it. Now I found some time. But here's the prob:
> When watching tv (vdr) it takes ~5minutes for the SNR to drop to zero
> after booting the pc, which leads to no picture+sound at all.
I haven't seen or heard such a problem till now. It sounds a bit weird
> What I noticed today (this is why i'm writing this email ), dmesg
> tells me the following the moment SNR drops to zero (but maybe I'm
> - "bt878(0): irq FDSR risc_pc=<differs>"
Hmm.. frontend finds no data, and is too busy .. So DMA buffers are
probably junk and late..
> I saw its possible to let the bt8xx chip ignore IRQ-FDSR-errors in
> dvb-bt8xx.c. I added BT878_AFDSR to card->irq_err_ignore in the
> dvb_bt8xx_probe()-function in its BTTV_BOARD_TWINHAN_DST-section. But
> it didn't have the desired effect.
> It's likely this is total nonsense, or does not even have any effect.
This doesn't matter, but helped to identify the problem ..
> Now, has anyone seen such problem before ? Am I right, that my card is
> most probably broken ?
I think probably the tuner is broken, i haven't heard of such a weird
incident till now, but it does look like the tuner does not work anymore
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