[linux-dvb] twinhan 1020A not working

Remy Bohmer linux at bohmer.net
Sun Jan 6 15:37:55 CET 2008

Hello Gregor,

I remember I also had problems on my Dual Core system, where the bt878
driver load may fail while it is loaded in parallel with the bttv

I added this also in my modprobe.conf:
install bt878 /sbin/modprobe bttv; /sbin/modprobe --ignore-install
bt878; /sbin/modprobe dst; /sbin/modprobe dst_ca; /sbin/modprobe

This line forces the loading of all the drivers in the proper order.

Hope this helps...

Kind Regards,


2008/1/6, Gregor Fuis <gujs.lists at gmail.com>:
> Remy Bohmer wrote:
> > Hello Gregor,
> >
> > Can you please give me the revision numbers?
> > These are listed somewhere on the boards.
> > As mentioned before, different revisions are different clones from
> > other boards en need a different driver configuration.
> > Besides, I do not know if all combinations of different revisions of
> > the boards work with 1 driver and generic setting. Maybe with the
> > latest changes CityK was talking about, it is possible now?
> >
> > At first, I would suggest to leave the 'green' board out, and just put
> > in the cards of the same revision and get that working, when this
> > works you can put back in your 'green' card, and try get that working
> > also.
> >
> > To check which firmware version you have, you can enable the logging
> > inside the drivers.
> >
> > It is good to hear that you do not have a yellow card (rev3) in the
> > system, which seems to be the most unstable card of the series.
> >
> > Luckily you do not need a CAM on these boards, because that part is
> > very unstable inside the cards itself, which sometimes require a full
> > power off of the system (power cable removed for at least 20 seconds),
> > to get the boards reset again and to get them working properly... (in
> > fact, if the CAM part of some board is getting into an undefined
> > state, this will also result in a unbootable system, because the
> > firmware is not behaving properly anymore...)
> >
> > Note: To work around this reset issue partly, it might be worth trying
> > to add these flags to your modprobe.conf: 'options dst dst_addons=32'
> > I added this dst_addons option set to 32(=DST_TYPE_HAS_CA) to make
> > sure the card is reset on load time of the dst-driver. if omitted, the
> > dst driver will not be able to communicate to the card during
> > dst_probe() on a cold boot and loading the dst (and dst_ca) driver
> > fails. (A soft reboot will load the driver after reboot without
> > problems.)
> >
> >
> > Kind Regards,
> >
> > Remy
> >
> The blue colored are version 1.0, but on green colored I can't find
> version number anywhere on PCB. I will try to remove some labels, if it
> is under.
> I replaced green one with other blue card because I have total 5 blue
> cards. I wold like to get 4 of the to work for my new mythtv setup. And
> then to setup another slave mythtv backend for other two.
> I tried your advice with this lines in /etc/modprobe.d/options
> options dvb_core dvb_shutdown_timeout=0
> options bttv i2c_hw=1,1,1,1 card=0x71,0x71,0x71,0x71
> options dst dst_addons=32,32,32,32
> With these lines I can get to work three cards of 4 (all ver 1.0 and
> blue), but I can boot my system just 1/3 times. Other 2/3 of boot
> procedures system just hangs.
> Regards,
> Gregor

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