Restart/reset USB in Ubuntu 12.04 without rebooting

Either my Dell Optiplex 990 computer or my Linux install has an issue: occasionally, when I re-plug a USB device into the system, it’ll cause a fault in the USB module in the kernel and USB goes dark. I’m unsure as to whether this is a hardware or software issue, but I’d simply like to restart my USB subsystem and continue working. When searching the web for ‘restart USB in Linux’ and ‘reload USB kernel module’, you get a plethora of results and none of which will work (seemingly due to how the Ubuntu standard kernel is …

in IT · Mon 25 June 2012

Plone/Zope, Python and collective.autoreload / plone.reload

Here’s an interesting error message I got stumped with for a good set of hours.  The issue started with me using collective.autoreload with Plone and it does the trick, mostly.  With any such ‘operation’ and live reloading of code for Python, you’ve got to expect that not everything will go according to plan.  Most things do, but one issue I found presented with this error message:

< ... huge traceback ...>
TypeError: super(type, obj): obj must be an instance or subtype of type

The issue arises for me (and you’ll probably see it elsewhere) when I go ahead …

in Python · Fri 20 November 2009