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Kubuntu/Pulseaudio: Record both mic and system audio

Submitted by Druss on Fri, 2016-10-14 19:35

Today, I started dabbling in doing some screen recording in Linux and while I could find programs to record the screen, I couldn't get the audio working as I wanted. By default, the programs record either the system audio, or the mic audio (or if the program is shit, neither); they don't record both the system audio and the mic audio. The fix for this on my Kubuntu 16.04 (Xenial) system which uses the Pulseaudio system to manage audio is as follows:

Enabling logging for your MySQL queries from the MySQL prompt

Submitted by Druss on Sat, 2016-06-04 01:44

I usually find it a chore to edit the MySQL conf files (as for one, I often have no idea which my.cnf file to edit!) One way to work around this issue, particularly if you want to change a setting temporarily, is to simply enable the change dynamically via the MySQL command prompt. This can be accomplished by modifying "global" variables which can be listed with commands like so:

Kubuntu 15.10 / KDE not automounting partitions

Submitted by Druss on Tue, 2015-12-01 19:42

So I upgraded my Linux box to the latest Kubuntu 15.10 (Wily Werewolf!) and it's been an interesting few days ironing out niggles. One of them has been the missing partition manager icon which (IIRC) was present in 14.04 and where I could control which partitions were automounted at login. From the looks of it, there is no easy solution for this like installing a package or some weird Plasma widget. The only solution I was provided on IRC was the following roundabout-borderline-hack:

Adding a custom (service) menu to KDE's Dolphin (to queue a folder in VLC)

Submitted by Druss on Sat, 2015-08-29 22:07

I was looking for a way to add a custom context (right-click) menu to KDE's Dolphin (in Kubuntu 14.10, Utopic) that (much like in Windows) would allow me to enqueue an entire folder/directory in Videolan. Many of the examples that I looked at were rather sketchy or incomplete. Here's a simple working example that might be of help to someone else out there. You can modify it appropriately to get it working for other applications as well.

Typing an ellipsis and other exotic characters in KDE/Kubuntu

Submitted by Druss on Wed, 2015-02-18 20:11

I can sometimes be rather picky (some would say 'anal') when I write, for example, an e-mail. I get annoyed if I have to resort to typing three periods for an ellipsis rather than achieving it with just the one character. Doing something with one character instead of three is also a skill that has carved itself a niche in this age of Twitter. So how would one go about it?

Upgrading the Linux kernel in Kubuntu 14.10 from 3.16 to 3.19

Submitted by Druss on Tue, 2015-02-17 02:02

So I've had a graphics issue with my Kubuntu box which relies on an Intel motherboard. While I was hoping to put off the fix until the next version of Kubuntu (out in April), the display bug was getting to be really annoying. I therefore decided to upgrade to the latest kernel immediately.

Google Chrome status bar no longer appearing on hover

Submitted by Druss on Mon, 2015-02-16 19:04

So I upgraded my Kubuntu box's kernel to 3.19 and while that fixed my graphics issues, I ran into a new and peculiar issue where hovering over links in Google Chrome failed to display the linked addresses in the bottom of the screen (the status bar). This is apparently a known (Chromium) bug which has still not been resolved. The current recommended workaround is to disable and re-enable hardware acceleration as follows:

Eclipse Luna: java: /build/buildd/gtk2-engines-oxygen-1.4.5/src/animations/oxygencomboboxdata.cpp:87: void Oxygen::ComboBoxData::setButton(GtkWidget*): Assertion `!_button._widget' failed.

Submitted by Druss on Mon, 2015-02-02 18:03

After installing the shiny new version of Eclipse entitled 'Luna' on a Kubuntu 14.10 box, I found that it crashed/hung when trying to import/clone a Git repository. Starting the application from the command-line triggered the following notice before the crash:

Stuck with a VGA monitor (that you love) in the days of HDMI

Submitted by Druss on Fri, 2015-01-30 01:17

So, I have this old Samsung monitor that has served me very well. It's 21" in size and I don't really need anything larger. Only problem is that it is a VGA monitor and uses a VGA cable. My new PC however deems VGA to be of the same archaicity as Morse code and has therefore not deigned to support it. There then I was, stuck with a wonderful monitor that could not be used due to a compatibility issue. Rather wasteful.


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