Recently I replaced my processor from Intel Core 2 Duo E8400 to Intel Core 2 Quad Q8200 (both intel64 (x86-64) instruction set) and since then Firefox doesn't start. However firefox -safe-mode does work, which makes me believe that some plug-in is at fault. Firefox crashes randomly with message segmentation fault.
So I'm looking for some command line arguments which I can pass to firefox to make it print messages verbosely and so I can find exactly which plug-in is causing the error.
I'm on Ubuntu 9.10 x64 and so far didn't see any problem regarding the replacement of processor except for Firefox. (Other Mozilla based technologies like Songbird and Thunderbird work perfectly.)
Update (1 hour later): I just simply disabled all extensions in safe mode and enabled them one by one, and now all extensions are enabled again and Firefox is working good now. However, I'm still holding for choosing best answer about how to enable verbose mode for firefox command.
Best Answer
command line options can be found http://kb.mozillazine.org/Command_line_arguments and developer.mozilla.org/En/Command_Line_Options
but apparently the -console argument is windows only. Not sure if the lack of debug output launching it from a console on linux is because debug output is disabled for production compilations or some other strange reason.