[linux-dvb] Quality with linux worse then with Windows

Holger Rusch holger at rusch.name
Wed Dec 10 10:23:13 CET 2008


i got a

TerraTec Cinergy DT USB XS Diversity

Running well with v4l (except the problems with the SB700 USB ports of 
my MB (disconnects here and then) => I am using a PCI USB Card with NEC 
Chipset and everything works well).

One thing that bugs me:

The recording/reception quality is much worse that with windows.

Using the Terratec Software i get 100% signal and 100% quality in 
check-mode and i NEVER got any frameloss or other picture/sound errors.

Using v4l and vdr i get mpeg-blocks here and then (5 minutes) and even 
soundloss or complete frame loss.

Femon-Plugin for VDR shows me STR/SNR/BNR values which are in the lower 
orange area, really close to red. => BAD!

What may be the cause?

This is set:
options dvb_usb_dib0700 force_lna_activation=1

Would be nice to see help to get 100% signal back.

Tu-Tu Yu schrieb:
> Hi Sirs:
> I am working on the Dvico HDTV7 Dual Express TV tuner card under Linux
> environment with kernel (2.6.26).
> When I check the snr value and signal status about every 10 seconds,
> it works fine in first few hours, but it will stop after about 12 - 24
> hours.
> I found out if i check the snr and signal status every second. It will
> stop after 5 hours.
> If I check the snr and siganl status every time it read PES, it will
> stop in few minutes.
> And it will show the message==> value too large for defined data type,
> Read -1 byte from DVR.
> Do you think it because the driver is not compatible with my Desktop?
> Or I shouldnt check the snr value?
> Thank you so much
> Tu Tu Yu
> tutuyu at usc.edu
> _______________________________________________
> linux-dvb mailing list
> linux-dvb at linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

+ Contact? => http://site.rusch.name/ +

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