Difference between revisions of "Ubuntu"

Revision as of 23:16, 15 November 2019

Ubuntu is a linux distribution derived from debian. It's a very nice plug&play OS with all features I need.

cat /etc/os-release
cat /etc/lsb-release
lsb_release -a: Show the currently installed version. os-release has most information.

Modfications made

The few things I needed to tweak are listed here.

NetworkManager

NetworkManager is a bad idea, just disable it and use /etc/network/interfaces to configure your network. You may need to install ifupdown and disable the netplan thing to achieve this.

Settings GUI

One day I could not start the settings GUI anymore. Removing the unity-control-center fixed the problem one time. On another install it didn't.

sudo apt-get remove unity-control-center

Display

When I connect a monitor to my laptop on HDMI automatically a 3^rd VGA display is found.

xrandr --listactivemonitors: Show all active monitors

xrandr --output VGA-1-2 --off: Turn off the VGA display. The name may differ on other configurations.

Add applications

To add an application to the 'Open with' list edit /usr/share/applications/newapp.desktop.

For opening jupyter notebooks I added jupyter.desktop that looks like below. I don't think everything is needed but it works.

[Desktop Entry]
Type=Application
Version=1.0
Name=Jupyter
GenericName=Jupyter notebook
Comment=Prototyping and documentation 
Exec=jupyter notebook %F
Icon=jupyter
Terminal=false
Categories=GTK;Development;IDE;
MimeType=text/plain;text/x-python;
StartupNotify=true
Keywords=Python;Editor;

@@ Line 1: / Line 1: @@
-[https://www.ubuntu.com/ Ubuntu] is a linux distribution derived from [https://www.debian.org/ debian]. It's a very nice plug&play OS with all feature I need. The few things I needed to tweak are listed here.
+[https://www.ubuntu.com/ Ubuntu] is a linux distribution derived from [https://www.debian.org/ debian]. It's a very nice plug&play OS with all features I need.
-===Disable dnsmasq===
+;cat /etc/os-release
-The NetworkManager by default starts dnsmasq that makes your system act as forwarding DNS-server (127.0.1.1 in /etc/resolv.conf).
+;cat /etc/lsb-release
-This local server sometimes is not working properly so disable it.
+;lsb_release -a
+:Show the currently installed version. os-release has most information.
-In /etc/NetworkManager/NetworkManager.conf comment out the line: "dns=dnsmasq"
+==Modfications made==
-/etc/resolv.conf will now show the DNS-server(s) provided by DCHP (if you use that).
+The few things I needed to tweak are listed here.
+===NetworkManager===
+NetworkManager is a bad idea, just disable it and use <code>/etc/network/[[Networking#Interfaces|interfaces]]</code> to configure your network. You may need to install ifupdown and disable the netplan thing to achieve this.
+===Settings GUI===
+One day I could not start the settings GUI anymore.
+Removing the unity-control-center fixed the problem one time. On another install it didn't.
+<code>sudo apt-get remove unity-control-center</code>
+===Display===
+When I connect a monitor to my laptop on HDMI automatically a 3<sup>rd</sup> VGA display is found.
+;xrandr --listactivemonitors
+:Show all active monitors
+;xrandr --output VGA-1-2 --off
+:Turn off the VGA display. The name may differ on other configurations.
+==Add applications==
+To add an application to the 'Open with' list edit /usr/share/applications/newapp.desktop.
+For opening jupyter notebooks I added jupyter.desktop that looks like below.
+I don't think everything is needed but it works.
+ [Desktop Entry]
+ Type=Application
+ Version=1.0
+ Name=Jupyter
+ GenericName=Jupyter notebook
+ Comment=Prototyping and documentation
+ Exec=jupyter notebook %F
+ Icon=jupyter
+ Terminal=false
+ Categories=GTK;Development;IDE;
+ MimeType=text/plain;text/x-python;
+ StartupNotify=true
+ Keywords=Python;Editor;