[mythtv-users] Comcast STB upgrade breaks firewire channel changing

[Christopher Meredith]

On Tue, Mar 8, 2011 at 6:11 PM, Nasa <nasa01 at comcast.net> wrote:

>
> ----- "Gabe Rubin" <gaberubin at gmail.com> wrote:
>
> > On Tue, Mar 8, 2011 at 3:47 PM, Nasa <nasa01 at comcast.net> wrote:
> > >
> > > ----- "Stephen Otto" <sotto at emsco.com> wrote:
> > >
> > >> From: Christopher Meredith [mailto:chmeredith at gmail.com]
> > >> Sent: Tuesday, March 08, 2011 3:43 PM
> > >> To: Discussion about MythTV
> > >> Cc: Stephen Otto
> > >> Subject: Re: [mythtv-users] Comcast STB upgrade breaks firewire
> > >> channel changing
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> On Tue, Mar 8, 2011 at 10:04 AM, Stephen Otto < sotto at emsco.com >
> > >> wrote:
> > >>
> > >>
> > >> > About a week or two ago, Comcast sent out a ton of promotion
> > >> material
> > >> > pushing on-demand content. I didn't pay much attention to it.
> > But
> > >> > shortly after that, they pushed a software update to my STB
> > (Cisco
> > >> > RNG-150) that looks to be completely new. The layout and color
> > of
> > >> the
> > >> > menus are completely different and the guide bears the "TV
> > Guide"
> > >> > logo. Anyway, this update also broke firewire channel changing.
> > I
> > >> have
> > >> > been using 'mythchanger' with the -f 6 option to great effect.
> > Now
> > >> it
> > >> > does not work at all. The script detects and unknown STB, but
> > cannot
> > >> > change channels on it.
> > >> >
> > >> >
> > >> > Has anyone run into this? Is there a solution? Does anyone know
> > >> > anything about this software "upgrade?"
> > >>
> > >> For the last month plus, my firewire capability has stopped work
> > >> for exactly the same reason. I had it working for almost 3 years
> > >> prior to that -- and hadn't changed anything when it stopped
> > working.
> > >> I too would love to hear if anyone has solved this. BTW: see
> > thread
> > >> here
> > >>
> >
> http://www.gossamer-threads.com/lists/mythtv/users/457642?search_string=fire
> > >> wire%20channel%20change ;#457642
> > >>
> > >> Nasa
> > >> _______________________________________________
> > >>
> > >> What are you using for a channel change script? 6200ch? If so, any
> > >> chance
> > >> that Comcast changed the Vendor ID or Model ID in your STB to
> > >> something new
> > >> with the update?
> > >>
> > > No,
> > >
> > > I was using sa3250hd script and tried the mythchanger script.
> > >
> > >
> > >>
> > >>
> > >> I've been using the mythchanger script referenced in the thread
> > linked
> > >> above. I cycled through all the options to no avail. I've been
> > >> assuming that it shouldn't matter if Comcast only changed the
> > Vendor
> > >> or Model IDs because those merely identify the device to the
> > computer.
> > >> I've been using the -f option in mythchanger to force the protocol
> > it
> > >> uses, so detection of the device should be irrelevant. Am I right
> > >> about that?
> > >>
> > >>
> > >>
> > >> I’m not 100% sure but I know that I needed to update the code to
> > get
> > >> my box working (although I am not sure if originally I was using
> > the
> > >> –f option or not at the time). Try running mythchanger with a –v
> > >> option and see what it reports.
> > >
> > > I tried this and got:
> > >
> > > ./mythchanger -c 220 -v
> > >
> > > mythchanger .10f beta
> > >
> > > Acquiring firewire handle... OK.
> > > 1 port(s) found
> > >
> > > Acquiring handle on port 0... 1 devices detected.
> > > STB Vendor ID: 0x1947 Model ID: 0x0be0, Scientific Atlanta Model
> > SA3250HD
> > >
> > >
> > > Skipping empty node 1
> > > 1 STB(s) found:
> > > -------------
> > > STB 1: port=0, node=0, changer=1, GUID=0x0019472d784a0000
> > >
> > > Note: it didn't change channels...
> > >
> > Look at my email in this thread, where I link to a prior email sent
> > to
> > the list detailing what to do this information.  Once you have the
> > Vendor ID and Model ID, you will need to use that information to
> > modify the source code and recompile.  It sounds daunting, but it is
> > very easy.  I can't code and I try not to install from source because
> > I seem to always have make error out on me, but this worked fine.
>
> Thanks for the hints (I had missed your earlier email)...
>
> However, for both sa3250ch and mythchanger, my boxes Vendor ID and Model
> ID are already included.



I grabbed the source for mythchanger and added by vendor and model IDs. The
cable box is now "recognized" but the channel still cannot be changed.
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