The application icons in the toolbar along the top of the screen are specified in the .desktop files in the Hone/.local/share/plasma_icons folder. An absolute path is not needed as long as an icon file exists with the application name in, e.g. the /usr/share/pixmaps folder.
Connect to a NAS in Ubuntu Studio 20.10
I had to do the following to connect to a D-Link DNS320L network drive after an update to Ubuntu Studio 20.10 (prior to the update the drive was discovered and mounted automatically in Dolphin).
- Add this to the [global] section in /etc/samba/smb.conf:
client min protocol = NT1
- Add a vers=1.0 option to fstab, so the entry in /etc/fstab is:
//192.168.0.99/Volume_1 /mnt/raid-lounge cifs vers=1.0,guest,uid=1000,iocharset=utf8 0 0
Installing nVidia driver and CUDA toolit for GeForce GTX1050 Ti in Ubuntu Studio 20.10
CUDA allows the GPU on the graphics card to be used for general computing.
Installation instructions here: https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html
But then I found these instructions and followed them: https://askubuntu.com/questions/1288672/how-do-you-install-cuda-11-on-ubuntu-20-10-and-verify-the-installation
I didn’t do the verification step at the end, but after a reboot following installation I can now select CUDA as the Cycles render device in Blender.
Midi with Ardour on Linux
Here’s how to get Ardour set up so that the DAW can control a MIDI synthesizer. I’m using Ubuntu Studio, Ubuntu 20.04.1 LTS, Ardour 5.12.0.
- Start Jack (I use QjackCtl).
- In a terminal, type
a2jmidid -j default
a2jmidid is a bridge between the ALSA MIDI system and JACK.
- Start Qsynth (a front-end to the fluidsynth MIDI synthesizer) and make sure a soundfont is loaded.
- In the QjackCtl MIDI connections tab, connect the Output Port ‘midi_out’ of the MIDI track in Ardour to the Input Port a2j ‘FLUID Synth’.
- In QjackCtl Audio tab, make sure that the qsynth left and right channels are connected either to a system audio output (for listening) or to an Ardour audio track (for recording).
Installing Scilab on Ubuntu 20.04 LTS
The default install of Scilab doesn’t work on Ubuntu 20.04. I downloaded Scilab 6.1.0 from the Scilcab website. When executing the scilab executable, the following error occurs:
error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory
Turns out I have libtinfo.so.6 installed, so the fix is:
sudo ln -s /usr/lib/x86_64-linux-gnu/libtinfo.so.6 /usr/lib/x86_64-linux-gnu/libtinfo.so.5