[mythtv-users] HD-PVR as IR receiver under Mythbuntu, advice needed

Jerry Rubinow jerrymr at gmail.com
Wed Nov 25 16:13:04 UTC 2009


On Wed, Nov 25, 2009 at 11:03 AM, Johnny Walker <johnnyjboss at gmail.com>wrote:

> On Tue, Nov 24, 2009 at 11:14 PM, Jerry Rubinow <jerrymr at gmail.com> wrote:
> > On Tue, Nov 24, 2009 at 5:16 PM, Johnny Walker <johnnyjboss at gmail.com>
> > wrote:
> >>
> >> On Tue, Nov 24, 2009 at 4:13 PM, Jarod Wilson <jarod at wilsonet.com>
> wrote:
> >> > On Nov 24, 2009, at 4:58 PM, Jerry Rubinow wrote:
> >> >
> >> >> > There are reports of the unit essentially locking itself up during
> >> >> > recording if the ir part is being polled by the lirc_zilog driver,
> yes. Not
> >> >> > sure if that's an issue with the hdpvr driver or the lirc_zilog
> driver at
> >> >> > this point. I don't actually use my hdpvr for much of anything at
> the
> >> >> > moment, and haven't had time to dig into it.
> >> >> >
> >> >> > Hmmm.  Does use of the HD-PVR receiver necessitate use of
> lirc_zilog?
> >> >>
> >> >> Yes.
> >> >>
> >> >> > Is lirc_zilog always polling the IR?
> >> >>
> >> >> If loaded and bound to the hdpvr, yes.
> >> >>
> >> >> > Is there any way to prevent polling,
> >> >>
> >> >> Don't load lirc_zilog, or rewrite lirc_zilog to be interrupt-driven.
> >> >> (Not even sure if that's possible... It'd definitely be preferred if
> it was
> >> >> though).
> >> >>
> >> >> > and what implications does that have?
> >> >>
> >> >> Non-functional IR receiver. If you're not polling it, you're not
> going
> >> >> to see any incoming IR signals.
> >> >>
> >> >> Sounds like it's unknown whether this lockup affects all HD-PVR+lirc
> >> >> users or what the frequency is, or when you'll have time to look into
> it.
> >> >
> >> > Correct.
> >> >
> >> >> Fair enough.  It's not the answer I was hoping for, but better than
> no
> >> >> answer.  I still think I'll go ahead and get the Revo, and if I
> experience
> >> >> the same thing and it isn't too hard, I'll try to help debug it.
> >> >
> >> > Any and all help doing so would be much appreciated. However, at the
> >> > moment, I'm not quite sure where to start, other than running both the
> hdpvr
> >> > driver and lirc_zilog driver with full-blown module debugging options
> >> > enabled.
> >> >
> >> >> When you say "non-functional IR receiver", do you mean the driver
> isn't
> >> >> functioning or the hardware/firmware?  Or unknown?
> >> >
> >> > The driver has to poll the IR chip to see if a new signal has arrived.
> >> > If it doesn't poll the IR chip, you'll never know that a button was
> pressed,
> >> > rendering the receiver non-functional.
> >>
> >> I have the HD-PVR and I don't use the lirc_zilog - opting instead to
> >> control my STB with Firewire.
> >>
> >> The lirc_zilog is only needed if you want to use the IR receiver
> >> portion of the HD-PVR.
> >>
> >> Since my HD-PVR is on a dedicated backend unit I don't need IR to work
> >> on that box.
> >
> > But my question was about the receiver, not the blaster.  Like you, I've
> > been using firewire for STB control for years.   Hey wait a second, the
> Revo
> > doesn't have firewire!   ....now see there's the problem with planning
> > hardware upgrades in your head.  I just realized that the Revo will not
> be
> > in the same room as the STB, so it doesn't matter that it doesn't have
> > firewire.  The STB will be near the HD-PVR, which will be attached to the
> > backend in the basement.  What was I thinking?  I have no use for the
> Revo's
> > IR receiver, and can use the backend's firewire to change the STB
> channel,
> > so no use for blaster either.
> > I guess I won't have the problem I thought I would.
> > Thanks, Johnny.
>
> Sounds great - let me know how your Revo works out and which model you
> get. I'm wanting one but I'm waiting until Amazon has them again.
> (Amazon themselves, not a reseller through Amazon)
>

I'm ordering the AR1600, from newegg for $200.
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