If you have dual boot on your computer and use both – Windows and Linux – you have probably connected and reconnected your Bluetooth mouse & keyboard (or other Bluetooth devices) every time you reboot into the other operating system.
Recently I needed to reinstall Windows on a system and, unfortunately, I had lost the serial number. Using two simple Linux bash commands, I managed to find the serial number embedded into the computer’s BIOS. This is easy to accomplish on any computer and/or laptop that comes with Windows OS preinstalled.
Below I have censored the serial number (d’ohhhh!) and replaced it with XXXX.
If you don’t see your webcam video on Skype, in Options » Video Settings menu, the solution is to install Video for Linux 1, as you probably only have V4L2 libraries.
This is for users who encounter problems with Skype on 64bit Debian/Ubuntu. If this is you, then you should install libv4l in 32bit flavor.