SamY wrote: 
> Hello all. I have a question for you. I regularly experience a situation
> where my AVR won't respond to a "power on" command from the client, no
> matter how many times I try. It only happens after the AVR has been
> powered off overnight or longer, and the only way to clear it up is to
> manually turn the AVR on and off. From then on, everything is
> fine....until the next time. I have isolated the problem to a timeout on
> the initial 'PW?' command and, using a TCP client, have discovered that
> it is not a matter of increasing the timeout value --- the command is
> never responded to. My Denon is an AVR-3311ci and is 11 years old, so it
> might be something specific to this model's firmware. I have coded a fix
> and am waiting for the situation to occur again so I can test it. In the
> meantime, my question is:
> 
> Have you ever experienced this problem? If you have, how often does it
> happen and what is your AVR model?

I've seen something similar, but far more frequently, sometimes just a
small number of minutes apart and while the AVR was powered on.

It's been so long since I dealt with this, but several versions back in
my DenonSerial plugin I added logic to clear my command queue and close
my TCP or serial connection for any given AVR if LMS had sent a command
but had not seen a response in the last 10 seconds -- once that much
time had elapsed, I knew not to expect a response. 

In January 2021, my 10 second timeout was reached only four times, and I
think back then I had the same basic configuration as today, with LMS
polling my AVR every 30 seconds (commands MV?, SI?, and PW? since I use
the master zone). In previous months I've seen timeouts more frequently,
but I expect that's because in the past I sent more commands (I used to
control home theater volume by sending Slim Devices codes to my SB3 and
relying on LMS + DenonSerial to relay those to the AVR, but now in the
home theater our normal IR remote sends Denon commands and we rely on
the every-30-second polling to let LMS know about the change.)
Unfortunately I have not been logging the specific commands I've been
sending, even in these hang situations.

I'm using an AVR 2309CI which only has an RS232 port, so I have a
Raspberry Pi running 'ser2net' on Raspbian to allow me to communicate
with the AVR over basic TCP.



owner of the stuff at https://tuxreborn.netlify.app/
(which used to reside at www.tux.org/~peterw/)
Note: The best way to reach me is email or PM, as I don't spend much
time on the forums.
*Free plugins:* AllQuiet Auto Dim/AutoDisplay BlankSaver ContextMenu
DenonSerial
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