Development log

Code, tricks, quick technical ideas, recipes, progress reports, bash, ffmpeg and more…

Jit.log#190608

Good news! I got a small working stipend from cultural ministry. The main requirement is to follow my plan and (I think) submit a report at the end. Work/study must not be focused on a final product. Inevitably I am creating project in the same area and direction so the upcoming piece “INTELLIGENCE IS WHATEVER MACHINES HAVEN’T DONE YET” for exhibition at Kapelica gallery is more or less connected to this research. I will need to reschedule the working plan from spring to fall.

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Jit.log#190601

Last two weeks:

  • visited Rob in Maribor, had long discussion about different solutions, ideas… [190522]
  • fruitful and constructive meeting with Kapelica team [190523]
  • ordered hardware (2x computer monitors, 1x computer system with Nvidia graphics)
  • checked the cover/cocoon for the installation at Kapelica. looks nice, black and acoustically dampened. Made plans with Jure about how to proceed [190531]
  • picked up two screens from Mlacom. One multi-touch screen (1920×1080) + another wide and curved screen (2560×1080). Both Dell. setup in studio, connected to already working prak system. Testing SuperCollider and Processing functionalities. [190531] That was progress.
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Upgrading of mail server

Today I added an additional volume to the mailserver prefect, since it was running out of disk space for the mailboxes. I have now increased the space by adding a new ‘virtual’ block storage, mounted and some mailboxes have been moved to the new drive. This new drive can be resized as needed with the lowest cost possible. We don’t need more CPU or memory, just more disk space and this works with $0.10/GB per month. The only drawback is that these volumes cannot be automatically backed up.

I have transfered the files from /var/mail/vmail to /mnt/vmail1/vmail by using rsync like this:

This transfered whole folders preserving all permissions and ownerships.

Jit.log#190209 Machine Learning course starts

Yesterday I went through some basic introductory parts of the Machine Learning course at Coursera. Learned about unsupervised and supervised learning, classification and regression ML problems, clustering and non-clustering problems. There’s a lot left to do in the week 1 and I’m not sure if I’ll be able to finish that one till tomorrow. These deadlines can be extended as needed though.

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Jitakami Research 2019: Hello World

Today starts the logging of research project called Jitakami Research 2019. Basicly it consists of three big blocks – two of them running serially, and one in parallel to the two. The research part, for which I applied to a work stipend on cultural ministry (still pending, and probably will continue to for some time) consists of study and research from now up until the summer. In parallel, the idea is to produce a perfomance/installation at BitShift program at Kapelica gallery sometime in April – currently called Raglain, and then work on the second phase (AUTOCOM) that would presumably be shown in Linz.

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Jitakami Research 2019: working plan

This is the concept and plan for working stipend that I applied:

Predmet štipendije je raziskava na področju umetniškega pristopa k spoju glasbe in umetne inteligence.

Avtorja v to raziskavo žene predvsem vprašanje kako vzpostaviti umetniško situacijo (intermedijsko instalacijo in/ali performans), ki bi radikalno vstopila v gledalčevo/poslušalčevo dojemanje sodobnih tehnologij in z njimi povezanih fobij in fetišev. Za bližanje možnim odgovorom je nujna poglobljena raziskava.

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supercollider: deb package from git with checkinstall

Follow instructions how to build and install supercollider from git here: https://github.com/supercollider/supercollider/wiki/Installing-SuperCollider-from-source-on-Ubuntu, but instead of final make install, use checkinstall (apt install checkinstall):

$ sudo checkinstall -D -t=debian --install=no --pkgname=supercollider --pkgversion=3.10.0-0your_name make install

You’ll end up with a .deb file in that current build folder. Install it with gdebi:

$ sudo gdebi supercollider_3.10.0-0lallafa-1_amd64.deb

Prevent apt from ever upgrading your package by creating a file called “preferences” in /etc/apt folder, and put in:

Package: /supercollider/
Pin: release *
Pin-Priority: -1

From AwesomeWM to i3wm

I’ve decided to reinstall the GNU/Linux system on my old X220 ThinkPad and in 2018 finally move on from UbuntuStudio 14.04 (Trusty). In the process of also trying out new Lubuntu (which I didn’t like for some quite aesthetic reason and retried with Xubuntu – much better!) I also decided to finally try i3 window manager. So I wanted to quickly layout just some of the differences, that are quite subjective.

Enjoying:

  • windows grouped in a container with tabs
  • minimalist configuration
  • beautiful status/widgets bar
  • hiding screen-edge window borders
  • windows are actually fully using all pixels of the screen

Missing:

  • I keep hitting (awesomeWM) shortcut to maximize a window. There’s no maximise window in i3.
  • when there’s a floating window in otherwise tiled workspace, I cannot ‘hide’ that floating one
  • cannot switch away from fullscreen window within a workspace (to a window otherwise behind that window
  • There’s no minimize functionality
  • snap to screen-edge or other windows in floating mode

(I might update some of the points above in the next few days, as I become aware of what the muscle memory is telling me)

So I think there are number of limitations in i3wm – at least for somebody coming from AwesomeWM, which isn’t necessarily a bad thing. So these above are a moving target. I’m sure they will change as I will get used to features and non-features.

Credits

Huge thanks to Adhi Pambudi for sharing his setup as i3-starterpack!

Screenshot

i3wm, configuration in Emacs, URxvt

update #1

In order to use xbacklight to change brightness of your screen, you need to add

into your xorg.conf.

Since by default there’s no xorg.conf on ubuntu, instead of creating one, I went this way: in /etc/X11/xorg.conf.d/ folder I created a file called intel_backlight.conf and into it put the following:

Now, to use the Fn keys for brightness (on Home/End keys), into ~/.config/i3/config you put