[PC-BSD Dev] virtualbox com object bandaid & qt4 problem?

Joe Maloney jpm820 at gmail.com
Sat Dec 14 10:52:34 PST 2013

The good news is that the virtualbox com errors have been fixed in the new port.  I’m still running into segfault issues when running the qt4 app even with a new world and kernel.  I’ve submitted some backtrace info to the freebsd-emulation mailing list starting here.


I’ve also been informed by a FreeBSD user in the freebsd-vbox channel running rc1 that they did not have this problem.  If it still doesn’t work in the next ISO I will do some testing with stock freebsd to see if I can get it to work that way and figure out what the differences are if it does.  Not really a critical issue for me as I don’t really use vbox anymore.  Just wanted to try to help get all the little things fixed.

Joe Maloney

On Dec 8, 2013, at 1:54 PM, Joe Maloney <jpm820 at gmail.com> wrote:

> So I've been looking in the virtualbox cannot create com object error.
> Creating a VirtualBox.xml under /root/./VirtuaBox will fix this.  It
> seems that the executable is no longer creating this file as it should.
> There was a PR created for this one that looks like it hasn't been
> resolved yet.
> http://www.freebsd.org/cgi/query-pr.cgi?pr=183085
> Creating the file is enough to get VBoxManage to work from command line
> and phpvirtualbox to function.  The next problem seems to be the QT
> application segfaulting.  I've noticed some others mentioned having to
> unload env variables such as LANG, some QT4 variables with the
> experimental port.  However I've tried all this in a plain xsession and
> verified that no variables were loading using the env command and no
> dice.  
> I know normally I could debug gtk applications with gdb.  Not sure if
> there may be something similar for qt4.  Really feels like maybe
> something isn't right for launching the qt4 app though as it still
> segfaults there.
> I'm going to give the experimental ports a try next though I don't have
> much hope that will fix.  Although some have reported the experimental
> port works after unloading variables.  In which case that will be
> annoying to have to unload things like LANG and not sure what other
> effects that might have.  Just thought I would pass on what I've found
> so far in case it might help solve.
> Joe Maloney

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