Re: Afatech AF9013

On Martes, 16 de Agosto de 2011 18:37:49 Josu Lazkano escribi=F3:
> Thanks again, I edit /etc/modprobe.d/options.conf
>=20
> options dvb_usb_af9015 adapter_nr=3D4,5
> options dvb-usb disable_rc_polling=3D1
> options dvb-usb force_pid_filter_usage=3D1
>=20
> I change the signal timeout and tuning timeout and now it works perfe=
ct!
>=20
> I can watch two HD channels, thanks for your help.
>=20
> I really don't understand what force_pid_filter_usage do on the
> module, is there any documentation?
>=20
> Thanks and best regards.
>=20

=46or usb devices with usb 2.0 when tunned to a channel there is enough=
t usb=20
bandwith to deliver the whole transponder. With pid filters they only d=
eliver=20
the pids needed for the channel. The only limit is that the pid filters=
 is=20
limited normaly to 32 pids.

Jose Alberto

> 2011/8/16 Jose Alberto Reguero <[email protected]>:
> > On Martes, 16 de Agosto de 2011 00:22:05 Josu Lazkano escribi=F3:
> >> 2011/8/16 Jose Alberto Reguero <[email protected]>:
> >> > I have problems with a dual usb tuner. I limit the bandwith usin=
g pid
> >> > filters and the problem was gone.
> >> >=20
> >> > Jose alberto
> >> >=20
> >> > On Lunes, 15 de Agosto de 2011 15:34:20 Josu Lazkano escribi=F3:
> >> >> Hello, I have a problem with the KWorld USB Dual DVB-T TV Stick
> >> >> (DVB-T 399U):
> >> >> http://www.linuxtv.org/wiki/index.php/KWorld_USB_Dual_DVB-T_TV_=
Stick_
> >> >> (DV B- T_399U)
> >> >>=20
> >> >> I am using it on MythTV with Debian Squeeze (2.6.32). It is a d=
ual
> >> >> device, sometimes the second adapter works great, but sometimes=
 has a
> >> >> pixeled images. The first adapter always has pixeled images, I =
don't
> >> >> know how to describe the pixeled images, so here is a mobile re=
cord:
> >> >> http://dl.dropbox.com/u/1541853/kworld.3gp
> >> >>=20
> >> >> I have this firmware:
> >> >> http://palosaari.fi/linux/v4l-dvb/firmware/af9015/5.1.0.0/dvb-u=
sb-af9
> >> >> 015 .fw
> >> >>=20
> >> >> I read on the linuxtv wiki and there are some problems with dua=
l
> >> >> mode, there is some links for how to patch the similar driver
> >> >> (Afatech/ITE IT9135), but I am not good enough to understand th=
e
> >> >> code.
> >> >>=20
> >> >> I check the kernel messages:
> >> >>=20
> >> >> Aug 15 13:53:58 htpc kernel: [ 516.285369] af9013: I2C read fai=
led
> >> >> reg:d2e6 Aug 15 13:54:29 htpc kernel: [  547.407504] af9013: I2=
C read
> >> >> failed reg:d330 Aug 15 13:54:44 htpc kernel: [  561.902710] af9=
013:
> >> >> I2C read failed reg:d2e6
> >> >>=20
> >> >> It looks I2C problem, but I don't know how to debug it deeper.
> >> >>=20
> >> >> I don't know if this is important, but I compile the s2-liplian=
in for
> >> >> other devices this way:
> >> >>=20
> >> >> apt-get install linux-headers-`uname -r` build-essential
> >> >> mkdir /usr/local/src/dvb
> >> >> cd /usr/local/src/dvb
> >> >> wget
> >> >> http://mercurial.intuxication.org/hg/s2-liplianin/archive/tip.z=
ip
> >> >> unzip s2-liplianin-0b7d3cc65161.zip
> >> >> cd s2-liplianin-0b7d3cc65161
> >> >> make CONFIG_DVB_FIREDTV:=3Dn
> >> >> make install
> >> >>=20
> >> >> Can you help with this? This hardware is a very cheap and works=
 well
> >> >> for HD channels but, I don't know why sometimes has pixeled ima=
ges.
> >> >>=20
> >> >> Thanks for your help, best regards.
> >>=20
> >> Thanks Jose Alberto, I search on google for pid filters but I don'=
t
> >> find any interesting info.
> >>=20
> >> How can I limit bandwidth on dvb?
> >>=20
> >> Thanks for your help, I have two dual devices waiting for this fix=
 on my
> >> HTPC.
> >>=20
> >> Best regards.
> >=20
> > If  the driver has pid filters you can enable it with the parameter
> > force_pid_filter_usage=3D1 of dvb-usb.
> >=20
> > Jose Alberto