[mythtv-users] mythfrontend suddenly became very slow to read lirc input

[Marc MERLIN]

(cc on replies appreciated, thanks)

I have an admittedly outdated mythtv 0.25.0+fixes.20120622 which has
been working well enough for 3 years, but it just started being super
slow responding to remote keys at the main menus.
Something like 3-5 seconds for each key down press to be registered.

Once I'm playing a video, remote keypresses are instant, so mythfrontend
passes keys fine when playing video but not when displaying its menu
options.
If I use the plugged in keyboard up/down from the keyboard instantly
goes to prev/next menu option.

If I use vnc to connect to my X server running mythfrontend, I can also
instantly move to next/prev menu options.

But if I go back to the remote, it takes seconds. If I push down 3
times, it goes down 3 times, just takes seconds for it to happen (all 3
at once).

lirc seems to work fine:
myth:~# irw
000000008001006c 00 KEY_DOWN devinput
0000000080010067 00 KEY_UP devinput
It shows that the keys are instantly received and output to clients, be
it irw or mythfrontend.

So it seems that mythfrontend has decided to just hang before reading
from lirc, or read from lirc and wait a while before doing anything with
input commands, but only when displaying its menus. Once it plays
videos, then it's fine.

Kernel is 4.1.3 on ubuntu lucid (yes, that's old too, but I don't
upgrade things that work and need to keep working, and I'm not even
going to go through the list of things that ubuntu changed/broke for me
in new versions).

Considering I changed nothing with my config that I can think of, I'm a
bit at a loss of how to debug this further.

Any idea what to try next?

Thanks,
Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901