[mythtv-users] My Ceiling Fan Controls My Mythtv Sound

[William]

Since your fan does not include a remote control these are your most likly
suspects.

1) The fan itself. Some fans use a scr to control the speed (others use
multiple windings.) The ones with a scr are very bad producers of
interference on the power lines. They generate a spike on every ac cycle. To
check the fan, try it on the highest speed setting. That will disable the
speed reduction circuit.

2) Your ac power lines themselves. If your lines are poor. (Low voltage,
varying frequency, brown-outs, frequent outages, etc... ) This could be
affecting your settop box directly. The spike from turning on the fan could
be messing with your converter. Nothing much you can do there. You can try
moving the myth stuff to a different circuit. One preferably on the other
side of the 220vac line into your house. You could also buy a Uninteruptable
power supply (UPS) and run everything in your mythtv system off that. (Not
the tv and surround sound if you have it.) This has the added plus of
keeping your recordings going even when the power goes out. I get about 20
minutes run time off my UPS.

3) The fact that your hardware is not directly supported in ivtv could very
likely be the problem. My personal most likely solution to your problem -->
Get some well supported hardware and replace what you are using.

Good luck.


-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Gucchu Gul Lalwani
Sent: Monday, July 31, 2006 12:28 PM
To: mythtv-users at mythtv.org
Subject: Re: [mythtv-users] My Ceiling Fan Controls My Mythtv Sound


Hi John (JSA),

My ceiling fan is not remote controlled. 

Thanks,

Gucchu.


Message: 17
Date: Mon, 31 Jul 2006 11:36:11 +0200
From: Ryszard <ryszard99 at gmail.com>
Subject: Re: [mythtv-users] My Ceiling Fan Controls My Mythtv Sound  :( 
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Message-ID:
	<9d6bc2360607310236l769855e0j3abf3af47d7296b8 at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

this has given me a fantastic laugh for the day! thx!

On 7/31/06, John Andersen <jsamyth at gmail.com> wrote:

>
> On 7/29/06, Gucchu Gul Lalwani <gglalwani at gmail.com> wrote:
  
> > Hi,
> >
> > Strangely but I have no audio on Mythtv. To get audio I need to turn on
> > and off my ceiling fan,
> > Hardware:
> >
> > 1 Sound Card:
> > Model: .Elitegroup Sound Controller, Vendor: Silicon Integrated Systems
> > Corp; SIS 7012.
> > Running ALSA 1.0.10-0
> > 2. TV Tuner Card
> > BT878 Prolink Pixel ViewPlayTv Pro.
> > Vendor: Brooktree Corporation
> > Card Configuration
> > BTTV Card r, (Prolink Pixelview PV-BT878P+9B (PlayTv Pro rev.9BFM+NICAM)
> > Tuner > > B/DFF, I did not find the exact tuner support in bttv
documentation]
> >
> > OS and Configuration
> >
> > 3. Running SUSE 10.0 Kernel version 2.6.13-15-default
> > KDE version 3.4.3-27.2 i586
> > Mythtv 0.19-1
> >
> > 4. modprobe enteries
> > optionss bttv cardr tunerX pll=1 radio=1
> > alias char-major-89 i2c-dev
> >
> > 5.  Reading somethreads about KDE and audio issues with TV applications
> > I confirmed the following is having a modular support in my default
    
> kernel.
  
> >
> >     * the *snd_bt87x.ko* driver for the Audio (CONFIG_SND_BT87X: in
> >       Device Drivers -> Sound -> ALSA -> PCI Devices -> bt87x Audio
> >       Capture)
> >           o If you use the obsolete OSS system instead of ALSA, you want
> >             CONFIG_SOUND_BT878 (in Device Drivers -> Sound -> OSS -
> >             bt878 audio DMA, /and/ Tv card (bt848) mixer support)
> >     * I²C Support (Device Drivers -> I²C Support -> I²C Support and I²C
> >       bit-banging interfaces)
> >     * the *bttv.ko* driver, under Video4Linux (CONFIG_VIDEO_BT848:
> >       Device Drivers -> Multimedia devices -> Video For Linux -> BT848
> >       Video For Linux) (you HAVE to activate I2C support in order that
> >       BT848 appears in the menu)
> >
> > Do we know if there is a bug fix available? Please suggest if I need to
> > migrate to another version of software to fix the issue on my computer
> > or tweak some settings?
    
>
> Gucchu, you seem to have left out any information about the
> ceiling fan.
>
> How are we supposed to diagnose this without
> all the details.  Are you running all the fan patchs released
> to date? What chipset is the fan running?  How many blades?
>
> Have you scanned the fan for viruses?  When you reboot
> your fan does it work right?
>
> Is the fan getting too hot? Does the fan seem to be thrashing?
>
> Ok, ok, I'll stop....
>
> Does the fan use a remote control?  (Mine does, but I have
> not tested to see if it interfers with lirc).
>
>
>
>
> --
> ----------JSA---------
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