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So I had a bunch of audio files in mono and wanted to convert them to sterero. This is pretty much just a case of copying the single-channel mono stream and pasting it into the two separate channels of the stereo track. I then also wanted to add a fake effect that makes this new dubious stereo track sound something like a genuine stereo track. All this is possible in Audacity. What's more, the program allows batch processing which allowed me to automate this task across a bunch of files.

An ASUS ROGSTRIX B450-F gaming motherboard that I have had been working perfectly fine for a year. Suddenly though, booting up the system resulted in the following message on the POST boot screen:

The system would shutdown and restarting would result in the same message. I couldn't get into the BIOS either as the del and F2 keys did nothing.

Here are the steps I used to get X11VNC working on an Ubuntu (19.10) box. Hope this helps somebody else out there too.

Freeplane, a fork of the mind-mapping program, Freemind, works really well. Except for the fact that in my (K)Ubuntu installation, it sometimes hangs in the middle of editing a node. Once it becomes non-responsive, the only fix is to kill the process and restart the program. The version of Freeplane in Ubuntu 18.04 is 1.6.13. However, the current version (March 2019) of Freeplane is 1.7.7. So, it's highly possible that upgrading Freeplane to the latest version will fix this issue.

I needed to install Windows and downloaded the 4.7GB Windows 10 ISO from Microsoft's website. Since I only had Linux machines at my disposal (and no DVD drives), I had to look to install the ISO on a pen drive. While the purists advocated that I use dd to accomplish this, I found that getting the USB to be bootable was something of a chore. So I looked for a friendlier solution and this is what I found for Kubuntu:

So I tried playing a video on Netflix in Firefox and while everything worked including the previews while hovering over a title, the actual movie/TV episode failed to play and resulted in the following error:

The main thing that needs to be done is to enabled DRM support in Firefox's preferences section. (Look for a checkbox titled "Play DRM-controlled content".)