Brian J. Tarricone bjt23 at cornell.edu
Thu Nov 10 01:23:49 CET 2005

Hash: SHA1

On 11/9/2005 3:45 PM, Yves-Alexis Perez wrote:
> Brian J. Tarricone wrote:
>>On 11/9/2005 4:46 AM, Yves-Alexis Perez wrote:
>>>>Hi people,
>>>>I have a strange problem with xfce-mcs-manager. Sometimes (for example 
>>>>when upgrading a plugin) I'd like to refresh it. If I pkill -USR1 -f 
>>>>xfce-mcs-manager, everything works fine. But if I put that command in a 
>>>>script, it crashs xfce-mcs-manager.
>>Is there any reason you need to run it in a script?  Note that if you're
>>running it from a cron job or something similar, the script won't get
>>passed important env vars such as DISPLAY, and there's no way the new
>>instance of xfce-mcs-manager can start properly.
> Yes, this scripts is the postinst script of debian packages. But even if
> I execute a simple script in a terminal, with only "pkill -USR1 -f
> xfce-mcs-manager", it crashs. (and it seems that i'm the only one)

That sounds like a bad idea.  If the user upgrades across Xfce minor
versions while Xfce is running, they'll then have a new xfce-mcs-manager
running with settings for the new Xfce, but all the Xfce apps running
will be the old apps.  Note that only the MCS manager and panel have a
method to be told to restart themselves, so xfdesktop, xfwm4,
xfce4-session, etc. will need to be restarted manually.  The recommended
way is for the user to restart the session manually, which I don't think
is too much to ask.

>>>>That "bug" doesnt seem to be reproductible, at least to the few people I 
>>>> ask. I'm on linux/ppc, as a side note. (and I don't know how to run 
>>>>xfce-mcs-manager, because of threading).
>>Not sure what you mean; xfce-mcs-manager is not multithreaded.
> Well, I mean, the daemon mode.

Those are two different things.  Debug like so:

gdb xfce-mcs-manager
[... output ...]
(gdb) r --no-daemon-debug
[... output ...]
(gdb) bt
[... important useful output ...]

Note that gdb backtraces will likely be not-quite-useful if Xfce hasn't
been built with debugging enabled (or if the binaries/libraries have
been stripped after installation).


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