Re: ShowQ - "a QLAB for Linux"

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Hi Tim, list,

* Tim <termtech@xxxxxxxxxx> [2017-08-07 19:32]:
[...]
> > I've got ShowQ open in KDevelop, ready to troubleshoot.
> > But I'll need more information.
> > Is there anything else at all printed in the terminal output?
Upon starting showq qjackctl prints in its Messages window:
	14:06:17.923 JACK connection graph change.
	14:06:18.115 JACK connection change.
and its Connections pane shows the first two outputs of ShowQ being
connected to system:playback_1 and _2.

Here the GUI dialog box "Show Q encountered an unknown-error. Please
report this error to the developers of the program" is displayed.
Upon pressing "Ok" ShowQ exits and jackd reports
subgraph starting at ShowQ timed out (subgraph_wait_fd=28, status = 0, state = Triggered, pollret = 0 revents = 0x0)

> > It is best if /you/ try running a debug session under KDevelop,
> >   or use gdb stand-alone. (I just prefer KDevelop.)
> > It should show you the troublesome line(s) causing the crash.
ShowQ does not crash, so there is no backtrace from within gdb. All it
prints is

	(gdb) run
	Starting program: /usr/bin/showq 
	[Thread debugging using libthread_db enabled]
	Using host libthread_db library
	"/lib/x86_64-linux-gnu/libthread_db.so.1".
	[New Thread 0x7fffea53b700 (LWP 5756)]
	[New Thread 0x7fffe9cff700 (LWP 5759)]
	[New Thread 0x7fffe94fe700 (LWP 5760)]
	ShowQ:out_1 # system:playback_1
	ShowQ:out_2 # system:playback_2

(here is where the GUI dialog box "Show Q encountered an unknown-error.
Please report this error to the developers of the program" is displayed.
Upon pressing "Ok" ShowQ exits with

	[Thread 0x7fffe94fe700 (LWP 5760) exited]
	[Thread 0x7fffea53b700 (LWP 5756) exited]
	[Thread 0x7ffff7fa9a00 (LWP 5687) exited]
	[Inferior 1 (process 5687) exited with code 01]

> I forgot to ask:
> Can you do us a wee favour and run Jack with the Dummy driver
>  instead of ALSA?
> It will create two dummy ports and ShowQ should be able to start.
> If it doesn't, then I do not think Jack is the problem.
It does not start with the dummy driver, thanks for the idea.

> My guess would be something graphic related.
> The nature of that bug report error screenshot, and the fact
>  I get things like this when actually operating ShowQ seems to
>  suggest graphics troubles:
> 
> ** (showq:10780): WARNING **: Invalid borders specified for theme pixmap:
>         /usr/share/themes/Breeze/gtk-2.0/../assets/line-h.png,
> borders don't fit within the image
> 
> (showq:10780): glibmm-CRITICAL **:
> unhandled exception (type Glib::Error) in signal handler:
> domain: gtk-builder-error-quark
> code  : 2
> what  : /usr/local/share/showq/ui/editmidi.ui:404:1 <object> requires
> attribute "id"
> 
> 
> (showq:10780): glibmm-CRITICAL **:
> unhandled exception (type Glib::Error) in signal handler:
> domain: gtk-builder-error-quark
> code  : 2
> what  : /usr/local/share/showq/ui/editmidi.ui:404:1 <object> requires
> attribute "id"
Hm, I tried to remove my current .gtkrc-2.0 but the error remains. 

Thank you again so much.
Peter
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