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[linux-dvb] Re: tuning problems wih dvb-kernel



Robert Schlabbach wrote:
From: "Holger Waechtler" <holger@convergence.de>

From: "Andreas Oberritter" <andreas@oberritter.de>

seems like auto inversion fails. please try ves1820.c from dvb-kernel
Can you please report which delay values work reliably so that we can
take them over into the driver source?

How about just dropping the autoinversion feature from the VES1820? I think
that'd be the most reliable solution... Who needs autoinversion detection
anyway? Either you have an inverted signal (which should be the exception)
or you don't...
Some of the VES1820 based cards have the I/Q wires between PLL/Synthesizer and Demodulator swapped, so you don't know in advance whether INVERSION_OFF is really INVERSION_OFF or not.

If I remember correctly the Hauppauge cards designed by Technotrend and the old Siemens cards have the exactly opposite setting.

Holger



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