frontend getting stuck changing between themes/theme painter or exiting mythfrontend.

[Marc Tousignant <myrdhn@…>]

When switching between themes the frontend enters a hung or paused state. Does not seem to matter which theme you switch too.

# mythfrontend --version Please include all output in bug reports. MythTV Version : 23311M MythTV Branch : trunk Network Protocol : 56 Library API : 0.23.20100124-2 QT Version : 4.5.3 Options compiled in:

linux release using_oss using_alsa using_backend using_frontend using_lirc using_mheg using_opengl_video using_opengl_vsync using_qtwebkit using_v4l using_x11 using_xrandr using_xv using_bindings_perl using_bindings_python using_opengl using_vdpau using_ffmpeg_threads using_mheg

Attaching a log of what myth did before locking. Restarting mythfrontend is the only thing that seems to get it out of this state. On restart the new theme is loaded.

[robertm]

possibly fixed in r23317?

[Marc Tousignant <myrdhn@…>]

Negative, or somthing between r23317 and r23321 broke something else. I am getting more info into the log file however since moving past r23317. Attaching a new log.

[Marc Tousignant <myrdhn@…>]

Forgot to mention, what I see on the screen is blackness. After selecting the new theme the frontend behaves like it is starting the switch but never displays the new theme.

[Marc Tousignant <myrdhn@…>]

Attached a gdb thread trace of what was happening when trying to switch between themes. Not sure if it is usefull at all considering there is no crash event and I'm not sure if its even grabbing the correct information.

[yianniv]

Please check #7979, it happened to me too (I know that "me too's" don't help, but this could.)

[danielk]

Marc, thanks for the backtrace. It looks like MythSignalTimer is waiting on itself to stop..

I'll look at this tonight.

[sphery]

seems to also happen some times when changing theme painter and when exiting mythfrontend

[danielk]

(In [23348]) Fixes #7974. The blocking queued connection is causing us a deadlock, instead disable new signals from timer while servicing the existing signal. Also make some changes to the timer itself to ensure a quicker shutdown and avoid self-blocking.