[linux-dvb] Re: HEAD driver scanning problem

[Kovacs Balazs <basq@vendegvaro.hu>]

Kovacs Balazs wrote:
> 
> Holger Waechtler wrote:
> >
> > Kovacs Balazs wrote:
> > > I've found a problem (maybe bug) with HEAD driver (maybe it causes the
> > > mplayer bugs also)
> >
> > it's not a bug, it's the not-disabled-powermanagement. See below.
> >
> > > When I don't attach an antenne to the DVB card, and start HEAD driver,
> > > and after that I start an application which want to tune to a channel,
> > > kdvb-fe proccess starts to eat my CPU time, and even after quitting the
> > > application which want to tune (dvbtune, scan, vdr ....) the kdvb-fe
> > > still eats CPU time, (~50% on my C766) until I restart the driver.
> >
> > remove the "dvb_shutdown_timeout=0" module parameter from your Makefile
> > when insmod'ing the driver or pass a timeout value > 0 to the dvb-core
> > module.
> >
> > Then the kdvb-fe thread will exit after a few seconds and won't try to
> > to catch a transponder anymore.
> 
> thanks, you're right, it works. when i start vdr it wants to tune a
> channel, and kdvb-fe process starting and eating 40-50% of cpu time, but
> f.e. mplayer works fine meanwhile.
> 
> kdvb-fe thread active until vdr runs and eats CPU time (I checked with
> top) , but if I quit vdr kdvb-fe thread exists and free up CPU.

Holger, I have realized that, when I start mplayer from VDR, it eats the
CPU. Only thing that changed with starting driver without
"dvb_shutdown_timeout=0" that if VDR quit, kdvb-fe process disappear,
and won't eat CPU time after. From command line mplayer works OK. I
think this is because VDR wants to tune a channel with the driver, and
the driver starts to eat my CPU. Is there any solution?

thanks

basq



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