pdfPres freezes

[LordProtector]

When I start pdfPres it shows the first slide and a small black window. The program does not react on any inputs. Even the close button does not work. Only killing the process works.

uname -a

Linux delltux 3.2.0-27-generic #43-Ubuntu SMP Fri Jul 6 14:25:57 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Do you need any additional information?

[vain]

Hi,

I presume you're using Ubuntu 12.04. Which desktop environment? Which graphics card and which driver? Do you use any special 3D effects? Btw, which version of pdfpres are you using?

[LordProtector]

I use 12.04 with KDE 4.8.4. I use Intel HD 3000 and also tested the NVidia card (binary driver) with optirun from bumblebee-project. I tested it with the default KDE compositing but also disabled it. But nothings works.

./pdfpres -v gives me pdfpres version: pdfpres-0.2.3-9-g5e1c734

I updated to pdfpres version: pdfpres-0.2.3-16-g553ba0f with the same result.

The program runs with 100% on one of the cores, so I think there may be some endless loop.

[vain]

Hm, alright.

Does that happen with every PDF file? Could you try the following file?

http://www.uninformativ.de/tmp/10-pages.pdf

I just fixed a bug that lead to a crash of pdfpres. I don't think (!) that's related to your bug but maybe it's better if you give the latest version on master a try.

I guess that's going to be a little hard to debug because I can't reproduce it. You could try to do the following:

1. Get the latest code of pdfpres ("git pull" or a fresh "git clone"). cd into pdfpres's source directory.
2. Compile pdfpres using "CFLAGS=-g make clean pdfpres".
3. Run pdfpres from within gdb (the GNU debugger): "gdb ./pdfpres"
4. At gdb's prompt (will show up as "(gdb)"), type: "run /path/pdf/file". pdfpres should start as usual. If everything goes well, you should experience that freeze.
5. While pdfpres is frozen, you can hit "CTRL-C" in your gdb window. That will interrupt pdfpres and you can enter gdb commands again. At that point, enter "bt" to get a backtrace. Copy that output from your terminal and paste it here.

A backtrace looks something like this:

(gdb) bt
#0  0xb7fdd424 in __kernel_vsyscall ()
#1  0xb73008a3 in __poll_nocancel () from /lib/libc.so.6
#2  0xb758615b in g_poll () from /lib/libglib-2.0.so.0
#3  0xb7577a50 in ?? () from /lib/libglib-2.0.so.0
#4  0xb7577f2b in g_main_loop_run () from /lib/libglib-2.0.so.0
#5  0xb7c95dd0 in gtk_main () from /lib/libgtk-x11-2.0.so.0
#6  0x0804ee18 in main (argc=2, argv=0xbffff184) at pdfpres.c:1910
(gdb)

It will show us where pdfpres got stuck.

[LordProtector]

here is the bt of version pdfpres-0.2.3-17-g9ecc24e

I hope it helps

^C
Program received signal SIGINT, Interrupt.
0x00007ffff75467f9 in IA__gtk_widget_has_rc_style (widget=0x77f600) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:6509
6509    /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt
#0  0x00007ffff75467f9 in IA__gtk_widget_has_rc_style (widget=0x77f600) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:6509
#1  0x00007ffff754b28e in gtk_widget_reset_rc_style (widget=0x77f600) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:6577
#2  0x00007ffff754bc4c in IA__gtk_widget_realize (widget=0x77f600) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:3534
#3  0x00007ffff754c868 in IA__gtk_widget_set_parent (widget=0x77f600, parent=0x7782b0) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:6434
#4  0x00007ffff73ecdb6 in IA__gtk_frame_set_label_widget (frame=0x7782b0, label_widget=0x77f600)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkframe.c:391
#5  0x0000000000404d9b in updatePortPixbuf (pp=0x7dbb30) at pdfpres.c:300
#6  0x000000000040678e in onResize (widget=0x7762f0, al=0x7fffffffbad0, port=0x7dbb30) at pdfpres.c:1343
#7  0x00007ffff675eca2 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007ffff676fd71 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007ffff6778099 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007ffff754972e in IA__gtk_widget_size_allocate (widget=0x7762f0, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:4097
#12 0x00007ffff73ecafc in gtk_frame_size_allocate (widget=0x7782b0, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkframe.c:665
#13 0x00007ffff675ec1b in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff6770179 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007ffff6778099 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007ffff754972e in IA__gtk_widget_size_allocate (widget=0x7782b0, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:4097
#18 0x00007ffff73c4166 in gtk_event_box_size_allocate (widget=0x776380, allocation=0x7fffffffc5b0)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkeventbox.c:545
#19 0x00007ffff675ec1b in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff6770179 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff6778099 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007ffff754972e in IA__gtk_widget_size_allocate (widget=0x776380, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:4097
#24 0x00007ffff74b3ee1 in gtk_table_size_allocate_pass2 (table=<optimized out>) at /build/buildd/gtk+2.0-2.24.10/gtk/gtktable.c:1638
#25 gtk_table_size_allocate (widget=0x778210, allocation=<optimized out>) at /build/buildd/gtk+2.0-2.24.10/gtk/gtktable.c:876
#26 0x00007ffff675ec1b in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#27 0x00007ffff6770179 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff6778099 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007ffff754972e in IA__gtk_widget_size_allocate (widget=0x778210, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:4097
#31 0x00007ffff7378e14 in gtk_box_size_allocate (widget=0x776650, allocation=0x7fffffffd110) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkbox.c:500
#32 0x00007ffff675ec1b in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#33 0x00007ffff6770179 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#34 0x00007ffff6778099 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#35 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#36 0x00007ffff754972e in IA__gtk_widget_size_allocate (widget=0x776650, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:4097
#37 0x00007ffff75527ba in gtk_window_size_allocate (widget=0x660360, allocation=0x7fffffffd670)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwindow.c:5011
#38 0x00007ffff675eca2 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#39 0x00007ffff6770179 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#40 0x00007ffff6778099 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#41 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#42 0x00007ffff754972e in IA__gtk_widget_size_allocate (widget=0x660360, allocation=<optimized out>)
    at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwidget.c:4097
#43 0x00007ffff7553cec in gtk_window_move_resize (window=0x660360) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwindow.c:6420
#44 gtk_window_check_resize (container=0x660360) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkwindow.c:5425
#45 0x00007ffff675eeca in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#46 0x00007ffff6777741 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#47 0x00007ffff6778242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#48 0x00007ffff73aca40 in gtk_container_idle_sizer (data=<optimized out>) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkcontainer.c:1377
#49 0x00007ffff705fd56 in gdk_threads_dispatch (data=0x851560) at /build/buildd/gtk+2.0-2.24.10/gdk/gdk.c:512
#50 0x00007ffff61e3d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007ffff61e40a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007ffff61e449a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007ffff74282f7 in IA__gtk_main () at /build/buildd/gtk+2.0-2.24.10/gtk/gtkmain.c:1329
#54 0x00000000004082a9 in main (argc=2, argv=0x7fffffffdec8) at pdfpres.c:1910

[vain]

Aye, thank you. So pdfpres gets stuck in size allocate signals.

I can reproduce this on Kubuntu 12.04 x86_64 now. It appears the freeze is caused by setting the labels of the GtkFrames in updatePortPixbuf().

I'm looking into it.

[vain]

Should be fixed on master.