Enterprise's questions

On Ubuntu 23.04, I have installed Gedit alongside the default Text Editor (gnome-text-editor).

I want to keep gnome-text-editor, but I would like most text files to open in gedit.

I have added the following to ~/.config/mimeapps.list, but it does not work-- if I click on a *.txt file in Nautilus, it still opens in gnome-text-editor. What am I doing wrong in the following file?

# Separate *.desktop files with a ";"

[Default Applications]
application/octet-stream=org.gnome.gedit.desktop
application/xml=org.gnome.gedit.desktop
application/json=org.gnome.gedit.desktop
text/x-patch=org.gnome.gedit.desktop
application/javascript=org.gnome.gedit.desktop
text/x-csrc=org.gnome.gedit.desktop
text/markdown=org.gnome.gedit.desktop

[Added Associations]
application/octet-stream=org.gnome.gedit.desktop
application/xml=org.gnome.gedit.desktop
application/json=org.gnome.gedit.desktop
text/x-patch=org.gnome.gedit.desktop
application/javascript=org.gnome.gedit.desktop
text/x-csrc=org.gnome.gedit.desktop

# Override R Studio mime types listed in /usr/share/applications/rstudio.desktop
text/x-tex=org.gnome.gedit.desktop
text/x-markdown=org.gnome.gedit.desktop
text/html=org.gnome.gedit.desktop
text/css=org.gnome.gedit.desktop
text/javascript=org.gnome.gedit.desktop
text/x-chdr=org.gnome.gedit.desktop
text/x-csrc=org.gnome.gedit.desktop
text/x-c++hdr=org.gnome.gedit.desktop
text/x-c++src=org.gnome.gedit.desktop
text/markdown=org.gnome.gedit.desktop

In Ubuntu 21.04, when text is pasted into Gnome Terminal, the text is always highlighted.

• It appears as if the text is selected, but it is only highlighted.
• If you right-click on this highlighted text, the "Copy" option is actually disabled.
• Clicking in the terminal or clicking on the highlighted text does not un-highlight the text.
• The only way to un-highlight the pasted text is to type a key.
• If you try to select the highlighted text by clicking and dragging the mouse pointer, the text color actually inverts, and the text looks like it is not selected, when it in fact is selected.

This confusing behavior is not present in Ubuntu 20.04.

• In Ubuntu 20.04, when text is pasted into Gnome Terminal, the text is not highlighted.
• Then, selecting the text highlights it, as expected.

How to revert this confusing behavior of Gnome Terminal in Ubuntu 21.04, so it behaves like Gnome Terminal in Ubuntu 20.04 ?

Kolourpaint is missing icons in the tools pane on Ubuntu 20.10 when installed using sudo apt install kolourpaint.

Is there a solution that does not require using the snap version or changing the system icon theme?

The directory /usr/share/gnome-shell/modes/ contains the following configuration files that specify which style sheet to use, from the specified gresource, for the Gnome Shell Top Bar, Dash, and Lock Screen.

initial-setup.json
ubuntu.json
yaru.json

How does gnome shell know which of these config files to use/load?

There must be a place where the names initial-setup, ubuntu, or yaru are configured?

During bootup, I enter the grub2 command-line by pressing c on the Grub menu.

When I type the following command...

loopback loop (hd0,gpt2)/ubuntu-19.10-desktop-amd64.iso

...grub hangs, there is no more output or activity on the terminal, and eventually the laptop fans spin up because the laptop gets hot.

The path (hd0,gpt2)/ubuntu-19.10-desktop-amd64.iso is valid on my system.

I get the same result, regardless of which ISO I use, and I have verified the checksums of the ISOs.

I am experiencing this in Ubuntu 19.10 and did not have this issue in prior Ubuntu releases. The version of grub2-common I have is 2.04-1ubuntu12.

How can I get the loopback grub command to work? (For example, do I need to load specific modules or enter other commands prior to executing loopback?)

(Also, please add a comment if you also experience this issue on 19.10; I'd like to determine if this is specific to my install, or if this is a larger issue?)

(Please note, this question is related to another question about booting to an ISO on disk I have posted, but I beileve they are sufficiently different to warrant a separate post).

I'd like to create a theme based on Adwaita.

I discovered that Adwaita no longer uses *.css files:

cat /usr/share/themes/Adwaita/gtk-3.0/gtk.css
/* Adwaita is now part of GTK+ 3, this file is no longer used */

I found the Adwaita source code on GitLab:

MASTER: https://gitlab.gnome.org/GNOME/gtk/tree/master/gtk/theme/Adwaita

VERSION 3.24.10: https://gitlab.gnome.org/GNOME/gtk/tree/3.24.10/gtk/theme/Adwaita

(UPDATE: The "master" branch on GitLab may be "buggy" since it is in development. Instead, a more stable branch such as 3.24.10 should be used).

Therefore, I can download the source files from Gitlab and modify the included *.scss files with the color changes I want.

Once I've made my changes, how do compile the source into a new theme, and deploy it on my machine?

I'd like to be able to click on an icon in the Firefox search-bar to immediately bookmark a URL.

I already know that I can click on the ... "Page actions" icon to select the "Bookmark This Page" option, and I know I can drag the URL from the left onto the bookmarks bar to achieve this.

However, is there a way to replace the "Save to pocket" icon and replace it with a "Bookmark" icon?

I am using Firefox 63 on Ubuntu 18.10.

Here is a screenshot of the ... "Page actions" icon icon and the "Save to pocket" icon that I currently have...

In the Videos application (Totem), I see four channels:

1. Rai.tv
2. Euronews
3. Videos
4. Apple Movie Trailers

How can I remove these channels and add new ones?

Does typing r in Enter a Command dialog that appears after Alt+F2 key combination is used do the same thing as opening a terminal and executing gnome-shell --replace &?

Specifically, do they execute the same code "behind the scenes"?

I just installed 18.04.

Night Light is active, but the mouse cursor is not "red-shifting". I am using the default 'DMZ-Black' cursor theme.

But the pointer outline is a glaring bright white color, the same as when Night Light is turned off.

Is there a way to get the mouse cursor to honor the Gnome Night Light setting? (I do not want to install a different cursor theme).

Where is the checksum for the Ubuntu 18.04 Desktop ISO image (ubuntu-18.04-desktop-amd64.iso)?

I don't see it anywhere on the download page or on the release notes page.

The Checksums on the cd image page are for server and arm versions, but do not include a checksum for the desktop iso: http://cdimage.ubuntu.com/ubuntu/releases/18.04/release/

How can I download and install the Roboto Mono font on Ubuntu?

This is the font I am referring to:

https://fonts.google.com/specimen/Roboto+Mono

It is a monospaced version of the Roboto fonts.

The above page does not have a download link, and the fonts-roboto package only contains the proportional Roboto fonts, so I cannot use this duplicate here...

The Gnome Notifications area only shows the title and a portion of the first line of a message.

Clicking on the message in the Notifications area simply removes the message. I've tried looking at the Logs, but do not see the message there.

How can I view the full message?

In the screen shot below, there is a message about network discovery, but I can't see the rest of the message.

Using Firefox quantum 57 and Ubuntu 17.10, I am unable to scroll a web page by touching the screen and sliding the page. However this works in Chrome browser.

How to make touch-screen scrolling work in Firefox Quantum?

How can I search for *.odt or *.doc files that contain certain text in Ubuntu?

I use grep -rl <text to search for>, but this only works for text files.

Note: a solution that uses grep (such as searchmonkey) will not work because the *.doc or *.odt files have a special format.

From How to search for strings inside files in a folder?

• Recoll wants to index my home directory, but I want to search *.odt files in specific directories; I couldn't figure out how to do that with this tool.
• Searchmonkey seems to be a GUI for grep, and as I mentioned, grep doesn't work on *.doc or *.odt files.
• Regexxer also has the same problem.

From Searching through ODT documents without opening them?

• Like Recoll, I couldn't figure out how to search *.odt files in specific directories with this tool.

How do you install Cubic and use it to create a customized Ubuntu live CD *.iso file that can be burned to CD/DVD or copied to a bootable USB?

What is the format of the /etc/apt/sources.list file for Ubuntu?

As an example of the kind of information I am looking for, here is an explanation for Debian sources.list. However, the various sections, such as Distribution and Component, reference Debian releases; I am looking for Ubuntu specific information.

I see that kernel 3.14.1 is available for Trusty at

http://kernel.ubuntu.com/~kernel-ppa/mainline/

When will this kernel be available for upgrade via the Ubuntu repositories.

(I know that I can manually download and upgrade the kernel, but I'd rather get it as an update).

Trying to install icedtea-7-plugin on 14.10 x64 gives an error.

apt-get install icedtea-7-plugin
. . .
Selecting previously unselected package icedtea-netx:amd64.
. . .
Processing triggers for man-db (2.7.0.2-2) ...
E: Sub-process /usr/bin/dpkg returned an error code (1)

It seems there is a problem with a dependency, icedtea-netx. So I tried to install icedtea-netx just by itself, and the error is shown below.

It seemed to be looking for java-8-openjdk-amd64. I had installed openjdk-7-jre from the repositories, so I uninstalled that and installed both openjdk-8-jre and openjdk-8-jdk. However, this did not correct the issue with icedtea-netx.

(I want to use icedtea and open JDK, not the proprietary Java from Oracle).

Has anyone experienced this, and is there a resolution to the problem?

Here is the output of apt-get install icedtea-netx...

apt-get install icedtea-netx
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  icedtea-netx-common
The following NEW packages will be installed:
  icedtea-netx icedtea-netx-common
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Inst icedtea-netx-common (1.5.1-1ubuntu1 Ubuntu:14.10/utopic [all])
Inst icedtea-netx (1.5.1-1ubuntu1 Ubuntu:14.10/utopic [amd64])
Conf icedtea-netx-common (1.5.1-1ubuntu1 Ubuntu:14.10/utopic [all])
Conf icedtea-netx (1.5.1-1ubuntu1 Ubuntu:14.10/utopic [amd64])
root@PS001:/etc/apt/sources.list.d# apt-get install icedtea-netx
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  icedtea-netx-common
The following NEW packages will be installed:
  icedtea-netx icedtea-netx-common
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/1138 kB of archives.
After this operation, 1505 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Selecting previously unselected package icedtea-netx-common.
(Reading database ... 314900 files and directories currently installed.)
Preparing to unpack .../icedtea-netx-common_1.5.1-1ubuntu1_all.deb ...
Unpacking icedtea-netx-common (1.5.1-1ubuntu1) ...
Selecting previously unselected package icedtea-netx:amd64.
Preparing to unpack .../icedtea-netx_1.5.1-1ubuntu1_amd64.deb ...
Unpacking icedtea-netx:amd64 (1.5.1-1ubuntu1) ...
Processing triggers for gnome-menus (3.10.1-0ubuntu2) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu2) ...
Processing triggers for bamfdaemon (0.5.1+14.10.20140925-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.55ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.13-1) ...
Processing triggers for man-db (2.7.0.2-2) ...
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@PS001:/etc/apt/sources.list.d# apt-get -f install             
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up icedtea-netx:amd64 (1.5.1-1ubuntu1) ...
update-alternatives: warning: forcing reinstallation of alternative /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/itweb-settings because link group itweb-settings is broken
update-alternatives: warning: not replacing /usr/share/man/man1/itweb-settings.1.gz with a link
update-alternatives: warning: forcing reinstallation of alternative /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/itweb-settings because link group itweb-settings is broken
update-alternatives: warning: not replacing /usr/share/man/man1/itweb-settings.1.gz with a link
update-alternatives: error: alternative path /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/javaws doesn't exist
dpkg: error processing package icedtea-netx:amd64 (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 icedtea-netx:amd64
E: Sub-process /usr/bin/dpkg returned an error code (1)

Can I add multiple alternative repositories to a *.list file in /etc/apt/sources.list.d, so that, for a specified package, if the first repository is unavailable, apt-get will try to download the same package from the next repository in the list?

For example, could I create a file called /etc/apt/sources.list.d/games.list with the following content?...

deb http://archive.getdeb.net/ubuntu trusty-getdeb apps
deb http://mirrors.dotsrc.org/getdeb/ubuntu trusty-getdeb games

...so that, if http://archive.getdeb.net/ubuntu is down, will apt-get automatically try http://mirrors.dotsrc.org/getdeb/ubuntu?