On 14/12/2015 10:21 μμ, Alberts Muktupāvels wrote:
Hi,
any chance you could get gdb output from gnome-flashback crash?
Probably easiest way:
- log into session that does work
- open terminal and run 'gdb gnome-flashback'
- set GDK_SYNCHRONIZE environment - 'set env GDK_SYNCHRONIZE = 1'
- run it
- after crash get backtrace - 'bt'
Thanks, but I'm seeing a lot of ?? and not many Xorg function calls, and I'm thinking that I might require a debug build or a different breakpoint to send something useful...
I'll google a bit on how to break on specific functions, please send me more info if you can think of something.
ltsp srv1-dide:~$ export GDK_SYNCHRONIZE=1
ltsp srv1-dide:~$ gdb gnome-flashback
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Reading symbols from gnome-flashback...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/gnome-flashback
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[New Thread 0xb5c3db40 (LWP 5996)]
[New Thread 0xb541bb40 (LWP 5997)]
[New Thread 0xb48ffb40 (LWP 5998)]
[New Thread 0xb40b6b40 (LWP 5999)]
(gnome-flashback:5992): Gdk-ERROR **: The program 'gnome-flashback' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRequest (invalid request code or no such operation)'.
(Details: serial 128 error_code 1 request_code 149 (RANDR) minor_code 25)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the GDK_SYNCHRONIZE environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Program received signal SIGTRAP, Trace/breakpoint trap.
0xb6f9e6e9 in g_logv () from /lib/i386-linux-gnu/libglib-2.0.so.0
(gdb) bt
#0 0xb6f9e6e9 in g_logv () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1 0xb6f9e7a5 in g_log () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2 0xb74b40e4 in ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
#3 0xb74bf4f4 in ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
#4 0xb6e3f23a in _XError () from /usr/lib/i386-linux-gnu/libX11.so.6
#5 0xb6e3c1db in ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
#6 0xb6e3d24f in _XReply () from /usr/lib/i386-linux-gnu/libX11.so.6
#7 0xb7f6977a in ?? () from /usr/lib/i386-linux-gnu/libXrandr.so.2
#8 0x08069031 in ?? ()
#9 0x0806a2be in ?? ()
#10 0xb708e1b9 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#11 0xb708fcba in g_object_new_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#12 0xb708fd33 in g_object_new () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#13 0x08068117 in ?? ()
#14 0x08061c75 in ?? ()
#15 0xb70ac540 in g_type_create_instance () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#16 0xb708dbd7 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#17 0xb708f5c3 in g_object_newv () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#18 0xb708fd4d in g_object_new () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#19 0x0806391f in ?? ()
#20 0x08059b60 in ?? ()
#21 0x08059e4c in ?? ()
#22 0xb70ac540 in g_type_create_instance () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#23 0xb708dbd7 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#24 0xb708f5c3 in g_object_newv () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#25 0xb708fd4d in g_object_new () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#26 0x0805a093 in ?? ()
#27 0x0805a138 in ?? ()
#28 0x0805a46b in ?? ()
#29 0xb7158e20 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#30 0xb715952a in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#31 0xb71b6b6b in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#32 0xb7158e20 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#33 0xb715952a in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#34 0xb71b6071 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#35 0xb71b63d2 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#36 0xb7158e20 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#37 0xb715952a in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#38 0xb71aade2 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#39 0xb7158e20 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#40 0xb7158e6b in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#41 0xb6f94560 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#42 0xb6f97ceb in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#43 0xb6f980d9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#44 0xb6f98489 in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#45 0x08059418 in main ()
(gdb)
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