We’re currently using Jitsi a lot, an open-source video conferencing solution. On my GNU/Linux machine running Ubuntu, I had issues with using it on Firefox, using up all the CPU and blocking/freezing after a while. Solution: it works fine on Chromium.
Ubuntu
Yoshikoder won’t start on Ubuntu
Two days ago my Yoshikoder refused to start on the Ubuntu (GNU/Linux) machine. So I tried in the console java -jar Yoshikoder-0.6.4.jar and was informed that “Error: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper”. A quick on the web look turned out that the solution is simple. In the console, I opened the following file:
sudo leafpad /etc/java-11-openjdk/accessibility.properties
and commented out the line causing problems (in my case it was the last line), so that it reads:
#assistive_technologies=org.GNOME.Accessibility.AtkWrapper
Sorted.
Installing rgdal on GNU/Linux
Trying to do install.packages("rgdal") on my GNU/Linux machine failed at first. It seems that my system had a couple of libraries not installed, so in the terminal:
sudo apt install libgdal-dev
sudo apt install libproj-dev
and then install.packages("rgdal") back in R.
Modified from: https://stackoverflow.com/questions/44382368/rgdal-installation-difficulty-on-ubuntu-16-04-lts
Zotero on Ubuntu Does Not Update: How to Fix the Permissions
My Zotero did not update, showing a dialog that while there is an update available, I apparently lacked the permissions to update. First I tried to chmod the directory where I extracted Zotero to, and the Zotero binary, but that did not change the error message. It turns out there is another directory that needs to be changed:
sudo chmod 707 /usr/bin/zotero && sudo chmod -R 707 /opt/zotero
(in the terminal) and now everything works as it should.
Update 10 April 2019: see comments for a more appropriate handling of the permissions.
