Frontend crash when opeing audio settings

[torbjorn.jansson@…>]

i recently upgraded to 0.26 fixes and notice that the frontend crashes on some of the settings pages. crash happens all the time if i open the audio settings page and try to navigate using the arrow keys to the top dropdown box where you select the audio device.

i have attached a backtrace of the crash and the frontend log

[torbjorn.jansson@…>]

gdb backtrace

[torbjorn.jansson@…>]

frontend logfile from the time of the crash

[stuartm]

The logs give the impression that no audio device is detected at all and I'm guessing that part of the settings widgets doesn't handle that case very well.

[torbjorn.jansson@…>]

same crash also happens when in the air play settings screen and trying to navigate using the arrows. if i just click next repeatedly without trying to do something with the airplay settings it doesnt crash.

[Matthew Gabeler-Lee <fastcat@…>]

I'm seeing something similar ... any settings screen with a text input, if I move focus to that text input, immediate crash.

In the backtrace attached earlier, I see some frames of interest:

#9  0xb5d5f4e5 in _XIOError () from /usr/lib/libX11.so.6
No symbol table info available.
#10 0xb5d5d274 in _XReply () from /usr/lib/libX11.so.6
No symbol table info available.
#11 0xb5d3e1a7 in XListFontsWithInfo () from /usr/lib/libX11.so.6
No symbol table info available.

I see the frontend terminating with "X11 fatal i/o error" when this happens. The font list makes me wonder if the crash is dependent on the list of installed fonts.

This may be a QT bug and not a MythTV bug?

[Matthew Gabeler-Lee <fastcat@…>]

And I solved my problem thusly:

... had to remove links because of spam filter ...

google xorg segfault doListFontsWithInfo ... first hit for me is from forums.opensuse.org, and links to a forum page on nvnews.net.

The long and short of it is there's a bug in the X server, and you should not have it talk to xfs (x font server) for fonts. Removing that configuration fixed the problem for me.