VirtualBox can’t operate in VMX root mode. Please disable the KVM kernel extension, recompile your kernel and reboot. You might see this VirtualBox error when trying to start a virtual machine or create a new one.

Although the PyGTK Reference Manual is extremely helpful in figuring out how to use gtk objects, there’s not a whole lot of information about setting properties on gtk.Label objects readily available. Some hard-to-find yet simple tasks are setting the font size of a label and rotating the text. Pango is your friend, so don’t forget to include him.

If you need to forward X the old school unencrypted way, you need to add one line to gdm’s custom.conf file and restart the desktop. Without this, the old “xhost +” won’t do a thing because the out of the box Xorg configuration includes the nolisten tcp flag.

Capture filters are completely different than display filters, and for some reason it’s not immediately evident when you’re in Wireshark to understand what the syntax is for capture filters. Capture filters don’t follow these rules at all. But if you’re familiar with tcpdump, then you already know how to limit the capture with filters.

So you want to setup networking so virtual machines will have access to the outside world through your hosts network connection. To do this you’ll need to share your host’s external interface with virtual machines through a bridge. A bridge can join two network segments and be used to inspect all Ethernet frames that pass between them. Create a bridge and a tunnel interface. Assign the tunnel and your host’s Ethernet interface to the bridge. Connect the bridge to the outside world. Your host uses the network card in promiscuous mode to handle packets for other interfaces connected to the bridge.

Using an image you want the mosaic to look like overall, and at least one tile library directory, create the mosaic. Using an image you want the mosaic to look like overall, and at least one tile library directory, create the mosaic. If the image doesn’t look like the original vangogh you based it on, try adding scale so it can use more images or shrink the tiles.

The easiest way to crop a border from an image is to rotate the image as you chop. It’s pretty much the same way you would cut a border from a piece of paper using a pair of scissors unless you were ambidextrous and even then wouldn’t it be faster to just rotate the picture rather than changing scissor hands.

You can skip to the closest key frame in a youtube video by supplying the time you wish to jump to as part of the URL. This is quite handy for sending someone a video where you want them to see a specific part. Instead of sending a link and saying jump ahead to 3 minutes and 14 seconds, you can just send them a link that does it for them.

Changing your sleeping habits by adjusting your clocks to the destination time may be one way to help avoid jet lag but it’s not always possible. Other methods used in combination with fasting may do the trick. Try to stay hydrated, avoid alcohol, eat foods high in protein after you arrive at your destination, and avoid staying indoors if you arrive at your destination during the daylight hours.

The Windows Registry is a hierarchical database that stores settings for low-level operating system components, kernel, drivers, services, and user interface along with 3rd party applications installed on the platform. Before you dabble, it might be a good idea to backup your registry using a restore point or exporting the registry to a file.