I've sucessfully installed the blackfire agent, cli tool and probe and it works fine. I've disabled the xdebug module while profiling with bf.
Now I want to use xdebug as I did before, but xdebug does not work, it just won't enter a debugging session. No breakpoint and not even xdebug_break work. A quote from the producers website says:
Known incompatibilities
Please note that PHP compiled with debug are not supported and that the Probe may conflict with XDebug or XHProf; disable those extensions when enabling the Probe.
Is there a way to disable the blackfire agent WITHOUT uninstalling the whole blackfire tool chain ? Moving the file /etc/php5/conf.d/90-blackfire.ini to a backup location didn't work.
Update
What works is uninstalling the php agent sudo apt-get remove blackfire-php. But I'm pretty sure there must be a better solution.
You can simply edit the file /etc/php5/conf.d/90-blackfire.ini and comment the following line extension=blackfire.so. Don't forget to restart apache2 or php-fpm