Recently, I have created a .desktop file of Firefox application. When I run Firefox, I want to have a dot symbol under the icon of the Firefox when searching it using super key in GNOME just like we get on the default running application.

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2 Answers

Most probably you don't have a correct StartupWMClass entry in your manually created .desktop launcher for the application. To add one, follow the steps below.

  1. Launch Firefox application in question.
  2. Run xprop WM_CLASS in a Terminal window. The cursor should turn into a crosshair.
  3. Place the cursor over the opened Firefox window and click. You should get a WM_CLASS string for the application in Terminal.

  4. Open the manually created .desktop file in a text editor and add (or modify) the following line

    StartupWMClass=OBTAINED-VALUE

    In place of OBTAINED-VALUE put a value you got from step 3 without any quotes.

  5. Save the .desktop file.
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Turn on "Use built in theme". It will show the dots

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