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Re: [libreoffice-users] Libreoffice, task manager bar and the running application icon


Sorry I didn't get back to you sooner. I was attending a conference the last 3 days.

There is a manpage for gtk-update-icon-cache which explains what it does and what to expect. Here is a snippet from that manpage:


gtk-update-icon-cache creates mmapable cache files for icon themes.

       It expects to be given the PATH to a icon theme directory containing an index.theme, e.g.
       /usr/share/icons/hicolor, and writes a icon-theme.cache containing cached information about the icons in
       the directory tree below the given directory.

       GTK+ can use the cache files created by gtk-update-icon-cache to avoid a lot of system call and disk
       seek overhead when the application starts. Since the format of the cache files allows them to be mmaped
       shared between multiple applications, the overall memory consumption is reduced as well.

I checked the LibreOffice 5.3 package file in /var/log/packages, which shows LibreOffice was installed into /opt, but the icons are installed into /usr/share/icons/gnome and /usr/share/icons/hicolor and /usr/share/icons/locolor . The script I gave you caches all three.

I think the problem you are experiencing may be caused by the old cache not reflecting the updated icons after you installed the LibreOffice update, thus xfce or kde fail to load the icon(s) and they will display the default icon. Running the script I suggested will re-sync the icon cache to your new icons.

No, I don't think you need to reboot after using the script. That is a windows-ism.

BTW: To keep the record straight, the icon-theme.cache file is not a script as you called it. So, you cannot execute it. In fact, it is not human-readable.



On 10/11/19 6:07 AM, mcmurchy1917techy wrote:
Hi Girvin

Thanks for the reply. I too use Slackware.

I've only got the /usr/share/icons/hicolor/icon-theme.cache script on my system. Do I need to reboot the machine for the change to take effect?


On 10/10/2019 19:20, Girvin Herr wrote:

I am assuming you are using a Linux distro, since you mention kde and xfce. I am using Slackware Linux and xfce. I would first try running the following script as root to refresh the icon cache before you get too deep:

# Cache the icons:
if [ -x /usr/bin/gtk-update-icon-cache ];  then
  for THEME in gnome locolor hicolor ; do
    if [ -e /usr/share/icons/${THEME}/icon-theme.cache ];  then
      /usr/bin/gtk-update-icon-cache  /usr/share/icons/${THEME} >/dev/null 2>&1

# Update the desktop database:
if [ -x /usr/bin/update-desktop-database ];  then
  /usr/bin/update-desktop-database  -q  /usr/share/applications

# Update the mime database:
if [ -x /usr/bin/update-mime-database ];  then
  /usr/bin/update-mime-database  /usr/share/mime  >/dev/null 2>&1

It won't hurt to refresh the desktop and mime databases also, as shown in the script. Historically when I suggested this to other users with icon problems, running this script cured their problems. I run this as part of my installation script when the LibreOffice package is installed, thus updating the databases at install time.

FYI, the icons are defined in the .desktop files for each of the LibreOffice apps in:


Look for the "Icon=" entry in the desktop file. Additionally, you may have defined additional desktop files in ~/Desktop . This directory is where the desktop shortcuts may have been copied/placed by you to your desktop.

And the icon files are in:


Note that libreoffice5.3 is the version I happen to be using. Substitute your version as needed. Note also that these are for my Slackware system. Your distro may place them elsewhere, but it should be similar.



On 10/10/19 2:49 AM, mcmurchy1917techy wrote:
I've got a problem that's bugging me.

The initial problem was that if I started calc, it started as expected except that in the task manager bar, which displays the running applications, I see an icon with a X and a circle through it, I suspect this icon is the default icon for running applications, the icon I'm expecting in the task manager bar is the calc icon. The Base and Impress icons displayed as expected.

The icon for writer displayed perfectly.

It bugged me so much yesterday that I decided to temporarily change from kde4 to xcfe. I started up Calc and got what I suspect was the default icon not the calc icon. Started writer got the default icon not the writer icon.

Returned to kde4.

This time. Started up Calc andgot the icon with a X and a circle through it not the calc icon - same as before. Started up Writer andgot the icon with a X and a circle through it not the writer icon, whereas previously I would have got the writer icon. The same was seen with the Base and Impress icons which were displayed as the X and a circle through it.

By switching from kde4 to xfce and then back again, I've made matters worse.

My question is where does the desk top environments get these icons from? How can I get the calc and writer icons displaying in the task manager bar


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