I'm guessing this is related to the other thread about using both
bumblebee and hybrid-windump together which I haven't had time to look
into yet.
It seems like the call to XOpenDisplay() fails and returns a null
pointer, are you sure you are passing the correct display names on the
command line?
Depending on the X server config you might need to start it with
./windump :0.0 :1.0 or something else. I don't know what display number
bumblebee runs on but I'm guessing it's not :0.1..
Something you might be able to use to identify the bumblebee display:
start an xterm using bumblebee, in the xterm run echo $DISPLAY, see if
it says :1.0 or something else.
Todo: We should add a check for failing XOpenDisplay before calling
XDefaultScreen().
/Joakim
Den mån 18 jul 2011 22.40.55 skrev Eric Appleman:
eric@kingfisher:~/hybrid-windump$ gdb ./windump
GNU gdb (Ubuntu/Linaro 7.2-1ubuntu11) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/eric/hybrid-windump/windump...(no debugging
symbols found)...done.
(gdb) run :0.0 :0.1
Starting program: /home/eric/hybrid-windump/windump :0.0 :0.1
Program received signal SIGSEGV, Segmentation fault.
0x001549c4 in XDefaultScreen (dpy=0x0) at ../../src/Macros.c:47
47 ../../src/Macros.c: No such file or directory.
in ../../src/Macros.c
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