Notes on upgrade from Ubuntu 14.04 to 16.04

Screenshot of the "system status" for Ubuntu Gnome 16.04

I know that the standard policy in Ubuntu is to offer the upgrade from an old LTS to a new one when the new LTS reaches .1, i.e., 16.04.1, but well…

I upgraded my 14.04 in several machines, and I can signal these almost show-stopper problems (workaround exists for all of them, though):

So yes, you have to be ready for a bit of bumpy switch. On the other hand, I like 16.04; the system feels snappier than 14.04, and libreoffice 5 is a big step forward.

Probably unrelated (i.e., not caused by the upgrade, but…):

xkcd color list for LaTeX users…

After reading the (very) fun post about colors name at xkcd, I decided to create a small package to add the color list to my LaTeX documents…

After circumventing a small bug in xcolor, and ten lines of python, I have managed to create a small package that I am sharing here.

To use […]

A new nice trick for the Linux keyboard: greek letters

New layout for my Spanish keyboard

I do not know you, but me (as an engineer) use Greek letters like α, β, γ and so on quite often. I did a small change to my linux keyboard layout: the new part in the keyboard symbols files now is

partial alphanumeric_keys xkb_symbols “standard_tlde” { include “es(basic)” key <TLDE> { [ grave, asciitilde, […]


hearth-shaped eclipse

I suppose that everyone and their cat has eclipse shots this days… but I think this is a bit different:

I was shooting the March 20, 2015 eclipse (in Madrid) through a tree, and as a test I tried to focus on the tree silhouette instead — and that was the result. The normal, […]

Managing PPAs in Ubuntu: a couple of useful scripts.

PPAs are really a great thing in Ubuntu: they allow you to have quite recent programs without upgrading all your system; most Ubuntu users use them extensively.

They have just one problematic side — the havoc that can happen on an upgrade. You see, when you upgrade your system, PPAs are disabled, but the program […]

Quick fix xfig bug

Ok, so I am a computer dinosaur. I still use xfig for much of my drawings, although I recon it is a program from the old century…

Unfortunately, after the recent upgrade to Ubuntu 14.04, a nasty bug surfaced in xfig: a crash whenever you try to draw point-dashed lines.

Fortunately, the launchpad user madHamish […]

The perfect lens kit…

…does not exist, of course. But I think I have found mine; at least for my balance (as an amateur) among portability, flexibility and quality.

I am an amateur photographer; I do not sell photos (apart from some wet dream), and my needs are to produce photos for my family in the form of a […]

How to modify a keyboard layout in Linux

New layout for my Spanish keyboard

Or: how to define a programmer-friendl(er) Spanish keyboard. …and you can add Greek, too!

A bit of history

There was a time when the computers all had the same keyboard — basically, the US one. You really do not need any more; the set of characters that could be represented where, after all, just the […]

Shepherding at (very) small scale

Ants shepherding their "cows"

I recently bought a (wireless) flashgun, a Nissin Di622 mark II for my Sony. And tried the Vivitar 100F3.5 Macro with a method I read from Robin Wong: I used the flashgun hand-held and the camera on the other hand. Firstly. Then I put the camera on a tripod, but with the flash still hand-held, […]

Macro lenses are expensive… all of them?

I have recently bought a new lens, on ebay, for around 100€, the famous Vivitar 100F3.5 Macro

They are quite right when they say it’s plasticky, noisy, and light; but I have to say that it autofocuses quite well on my Sony Alpha A55. And the performance… look for yourself. Click for bigger size.

With […]