#82 2007-12-16 xVidcap now requiring dbus to be present?

[Jesse Litton]

Yesterday's change "* src/Makefile.am: fix build without dbus". Seems to have had almost the opposite of the intended effect.

Previously, I did *not* have the dbus-x11 package installed, but I could compile and run xvidcap on my system (Kubuntu 8.04 - Hardy Heron, AMD64) with no problems.

After this 2007-12-16 patch, the program *still* compiles fine, but I get the crash below when running it. Installing the dbus-X11 package makes the problem go away, but (if I understood the changelog correctly) dbus shouldn't really be necessary?

evil@pluto:~/src/xvidcap/trunk$ xvidcap

** (xvidcap:23220): WARNING **: Unable to connect to dbus: Failed to execute dbus-launch to autolaunch D-Bus session

** (xvidcap:23220): CRITICAL **: dbus_g_connection_register_g_object: assertion `connection != NULL' failed

** (xvidcap:23220): CRITICAL **: dbus_g_proxy_new_for_name: assertion `connection != NULL' failed

** (xvidcap:23220): CRITICAL **: dbus_g_proxy_call: assertion `DBUS_IS_G_PROXY (proxy)' failed
Segmentation fault (core dumped)

[Karl H. Beckers]

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funny,
for me it did still try to compile xvidcap-dbus-client related files and failed. Can you provide an output of configure and your config.h?

[Karl H. Beckers]

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I cannot reproduce this.
I have done this:

remove dbus from pkgconfig, so autogen won't find it:
# mv /usr/lib/pkgconfig/dbus*.pc /root

do a fresh build:
# make distclean
# ./autogen.sh --prefix=/home/<username>/xvidcap
# make && make install

see what autogen found:
# grep -i dbus config.h
/* define if libdbus-1 and libdbus-glib-1 are usable */
/* #undef USE_DBUS */
looks good!

double check that xvidcap is not linked to dbus libs still around:
# ldd /home/kb87850/xvidcap/bin/xvidcap | grep -i bus
this returns nothing, which is as desired.

And lo, xvidcap runs fine, xvidcap-dbus-client has not been built.

[Jesse Litton]

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On my system, /usr/lib/pkgconfig/dbus-1.pc exists, even when dbus-x11 (which contains dbus-launch) is not installed. This seems to be the cause of the problem.

If I remove/rename that file, it will have the proper #undef (and build/run correctly). If I don't, I get "#define USE_DBUS 1" instead.

Maybe there needs to be a check for dbus-launch itself, instead?

Thanks,
J

[Karl H. Beckers]

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hmmm, on ubuntu gutsy dbus-launch is also in the "dbus" package. I don't have dbus-x11 installed. Could you let me know what dbus related packages and development packages are installed on your system, then also this:

$ for i in /usr/lib/pkgconfig/dbus* ; do dpkg -S ${i} ; done
libdbus-1-dev: /usr/lib/pkgconfig/dbus-1.pc
libdbus-glib-1-dev: /usr/lib/pkgconfig/dbus-glib-1.pc
python-dbus: /usr/lib/pkgconfig/dbus-python.pc

Also, hasn't KDE also replaced dcop with dbus?

[Mike Weston]

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The program 'xvidcap' received an X Window System
error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter
attributes)'.
(Details: serial 512450 error_code 8 request_code 161
minor_code 1)
(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 --sync command
line
option to change this behavior. You can then get a
meaningful
backtrace from your debugger if you break on the
gdk_x_error() function.)

This Errormessage will appear when Audioinput is set:
to /dev/dsp.
XVIDCAP crashing!!!
___________________________________________________
xtoffmpeg.c add_audio_stream(): Cannot open /dev/adsp:
-2

This Errormessage will appear when Audioinput is set:
to /dev/adsp.
Xvidcap renders but without audio!

HTH
Mike

[Mike Weston]

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user_id=2041374
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The program 'xvidcap' received an X Window System
error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter
attributes)'.
(Details: serial 512450 error_code 8 request_code 161
minor_code 1)
(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 --sync command
line
option to change this behavior. You can then get a
meaningful
backtrace from your debugger if you break on the
gdk_x_error() function.)

This Errormessage will appear when Audioinput is set:
to /dev/dsp.
XVIDCAP crashing!!!
___________________________________________________
xtoffmpeg.c add_audio_stream(): Cannot open /dev/adsp:
-2

This Errormessage will appear when Audioinput is set:
to /dev/adsp.
Xvidcap renders but without audio!

HTH
Mike

[Karl H. Beckers]

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user_id=782084
Originator: NO

Please do not hijack existing bug reports