hybrid-graphics-linux team mailing list archive

[Joakim Gebart <joakim.gebart@xxxxxx>]

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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