Heikki Lindholm kirjoitti: > Hello there, > > got myself a Technotrend DVB-C C1500 card, which has a TD1316AL/IHP > tuner, but the card doesn't really work on Linux - a huge surprise > there. It appears, the card is of a newer variety, which has some > incompatible component change. Using kernel 2.6.24, from what I've tried > the status seems to be: > - QAM64 channels work, ie. FE_HAS_LOCK but "unc" is very high > - QAM128/256 channels get only occasional FE_HAS_LOCK, but lose it in a > few seconds > > QAM64 high unc value is fixed by letting the corner detection stay on, > as reported in > http://www.linuxtv.org/pipermail/linux-dvb/2008-January/022847.html > > QAM128/256 tuner locking can be fixed by reverting the patch in > http://lkml.org/lkml/2005/9/4/202 > but "unc" is still at unacceptable levels. For the record, the two above changes seem the ones that have the most effect. On a hardware-wise good setup, the signal levels become good and errors are rare. The biggest problem with the card, or the specimen I have, at least, appears to be that it's really sensitive to interference, eg. if I put harddisks to work (grep "foo" /), error levels immediately rise. This was a problem with some early TT budget/Hauppauge DVB-T cards as well. I don't think this can be fixed in the driver. -- Heikki Lindholm _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
