I've been using SketchUp via VMWare Player for a while and the software just hangs now and then even after fixing the OpenGL support issue. I happen to have another PC running Windows 7. But I ran into the OpenGL problem again while trying to use remote desktop.

I recently installed a Windows 10 guest OS on my Ubuntu 16.04 host machine using VMWare Workstation 12 Player, mainly to use the Sketchup Make 2017 software. Skeckup keeps complaining lack of OpenGL support. Here's how to fix it.

I recently experienced unstable DNS on my Ubuntu laptop. Here is how to configure the DNS settings so it always use the Google DNS servers first.

I recently installed Ubuntu 16.04.3 on my Thinkpad X1 Carbon 3rd Gen laptop. However, there is no "Natural Scrolling" option for the touch pad. Here is how to fix it.

Amazon Glacier is a cheap massive cloud storage solution that is mostly suitable for storing cold data - data that are rarely accessed. The price is fair: $4/TB/month. However, it's not like Dropbox or Googld Drive that has nice client programs that you can simply drag and drop the files to be stored. Instead, you'll have to work with their APIs to upload you files. In this post, I'll explain the basics about how to upload the files and also how to query the inventory.

Recently I need to submit to a journal that does NOT accept the final PDF but requires all LaTex sources so that they can compile the PDF on their own. Given that any LaTex projects with reasonable size would have multiple *.tex, *.bib and figure files. It'll be nice to flatten the LaTex project so that we have as few as files to upload. Here is how.

I encountered this error while trying to run the Xilinx xlcm tool for ISE 12.2. Here is how to fix it.

In my previous post, I explored how the cast device find and configure the Chromecast dongle. In this post, I'll dig into the actual cast process.

There are plenty resources online that explains how Chromecast works. But most of them focus on up-layer protocols, such as mDNS, DIAL/HTTP. I am more interested in the 802.11 MAC layer. In particular, I was curious in questions such as:

• What happens when you set up a Chromecast?
• How the cast device (such as an Android phone) and Chromecast communicate (in 802.11 layer)?

Some of the questions were obvious, others are not. In this post, I will document the process about the Chromecast setup process. This will be the first of the series of posts on this topic.

The HT-SIG field of 802.11n PLCP preamble contains a 8-bit CRC for the receiver to validate the sanity of the header. Here is how to calculate it.