[mythtv-users] Upgrading from MythBuntu 14.04 to 16.04 - Potential issues?

Dan Wilga mythtv-users2 at dwilga-linux1.amherst.edu
Thu Dec 6 15:45:30 UTC 2018

On 12/6/18 10:26 AM, Allen Edwards wrote:
> On Thu, Dec 6, 2018 at 2:33 AM Phill Edwards <philledwards at gmail.com 
> <mailto:philledwards at gmail.com>> wrote:
> The only issue I have is the same one I had before the upgrade and 
> that is that when I turn the TV on, it takes about 2 minutes before 
> the remote is responsive. After that, it is fine.  I just cannot 
> understand even how Myth knows that the TV is off or just turned on 
> and I certainly don't understand why the remote would be so slow to 
> become responsive.  I often use a remote keyboard if I want to do 
> something during those initial minutes.  Does anyone know what could 
> cause this behavior?  It almost makes me want to get a different 
> remote or different control code but I like my remote very much and 
> don't need a new hobby :-)
It may seem counter-intuitive, but the backlight in TV itself can 
sometimes interfere with the operation of IR remote controls. This is 
particularly problematic with older CFL (pre-LED) backlights. It may be 
the case that the backlight is only interfering during a warm-up phase, 
which is why it stops doing so after 2 minutes.

The way to test this would be:

1. Turn on the frontend computer but leave the TV off.

2. Press up/down arrow or some other key on the remote that you know 
will make a visible change on the frontend.

4. Turn the TV on and see if the change happened.

If so, then it's most likely the TV's fault. See if the TV has any sort 
of "energy saving" mode that can be disabled, as that can cause the TV 
to rapidly flicker the backlight.

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