This post shows how to connect to USRP N2x0 from a Ubuntu guest OS inside Virtualbox running on a Windows host.

Shared folder is a great feature of Virtualbox to share data between the host and guest OS. This post shows how to mount the shared folder during boot on a Ubuntu 16.04 guest OS running on Windows 10 host OS.

In one of my research projects, I need to develop some signal processing logic that runs on the FPGA of the USRP, to meeting some delay and timing requirements. Here is a general overview of the steps to customize the DSP Rx chain of USRP N2x0 devices. Details of my particular customization will be probably discussed in separate posts.

Recently I needed to install tmux on a server which runs some ancient RHEL and I do not have sudo access to. Here is how I did it. In fact it has tmux 1.6 pre-installed, but my tmux configuration file is based on tmux 2.2, which contains many options that are absent in earlier versions of tmux.

I have been looking for a PDF viewer on Linux platform that is lightweight, keyboard driven. Evince was once my favorite, until I met Zathura.

multiprocessing is a convenient library to take the advantage of multiple cores easily found in modern processes. The typical pattern is to spawn a bunch of worker processes, and let them consume the data from a queue. However, when debugging, I usually found myself attempting to terminate the script using Ctrl-C yet to find it has no effect.

I recently installed Ubuntu 14.04.3 LTS on my Thinkpad X1 carbon (3rd Edition). Most of the stuff worked out of the box, yet the screen brightness adjustment key has no effect.

I was editing a LaTeX file using VIM and noticed that the scrolling is quite slow. Here is how I troubleshoot it.

Recently I installed Plex Media Server on my Ubuntu box. Here are what I did to make it run as my user so that it can index any of my media files without permission issues. The instructions here is for Ubuntu 14.04, but should be applicable to later Ubuntu version as well.

I recently built a PC based on Intel's latest Skylake CPU (i5-6500) and Z170 chipset (AsRock Z170 Pro4), and installed Ubuntu 15.10 on it. After setting up, however, I found that the kernel message buffer was flooded with this error message. This is how I fixed it.