[mythtv-users] Front end hangs while navigating Program Guide

[Larry R]

(newbie warning: my mistakes are inexperience, not malice)

  I’m bringing up mythtv V32 on a Raspberry pi 4B (Raspian) with a 
Silicon Dust Hdhomerun tuner. Both frontend and backend are running on 
the pi.

  When navigating through the Program Guide, the front end occasionally 
hangs with a frozen image and escape not working. When I kill the 
frontend task and look at the log, I see the message

TV::timerEvent(): Unknown timer: nn

  Repeated thousands of times until I killed the task.

  In www.mythtv.org/wiki/Raspberry_Pi, there’s a note that says If you 
notice general stability problems… See 
mythtv.org/wiki/Optimizing_Performance#MySQL_Database_Tweaks

  Looking there suggested adding a bunch of parameters to my.cnf, but 
when I did (either verbatim or by converting “48M” into 50331648, etc.), 
mySql failed at startup.

  I’ve included an excerpt from the log leading up to the frontend 
getting “stuck”. Any suggestions of where to look next would be welcome.

-lr

2023-01-22 16:43:24.752524 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Signal Power, (signal 100 45 
0 100 0 1 1))
2023-01-22 16:43:24.752542 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Seen PAT, (seen_pat 1 1 0 1 0 
1 1))
2023-01-22 16:43:24.752555 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Matching PAT, (matching_pat 1 
1 0 1 0 1 1))
2023-01-22 16:43:24.752572 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Seen PMT, (seen_pmt 1 1 0 1 0 
1 1))
2023-01-22 16:43:24.752587 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Matching PMT, (matching_pmt 1 
1 0 1 0 1 1))
2023-01-22 16:43:24.752601 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Seen Crypt, (seen_crypt 1 1 0 
1 0 1 1))
2023-01-22 16:43:24.752616 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:160 (Parse) - Parse(Matching Crypt, 
(matching_crypt 0 1 0 1 0 1 1))
2023-01-22 16:43:24.752806 D [18905/18905] CoreContext 
signalmonitorvalue.cpp:199 (AllGood) - AllGood failed on 
matching_crypt(0<1)
2023-01-22 16:43:24.808880 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 12
2023-01-22 16:43:24.833535 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 12
2023-01-22 16:43:24.862654 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 12
2023-01-22 16:43:24.877107 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 13
2023-01-22 16:43:24.877145 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 12
2023-01-22 16:43:24.898033 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 13
2023-01-22 16:43:24.898045 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 12
2023-01-22 16:43:24.898056 W [18905/18905] CoreContext tv_play.cpp:2582 
(timerEvent) - TV::timerEvent(): Unknown timer: 14

{repeated multiple thousands of times until mythfrontend task was killed.}