Dock icon as a question mark even though the .desktop file valid.
14199
Duplicate application icons in Ubuntu dock upon launch
17631
How to find out what process a system tray icon corresponds to?
82417
Info Icon vs Question Mark
153379
Folders showing lock icon
29795
creating desktop icon for Arduino 1.6.7 in 14.04
101553
Home screen icon for terminal program?
7202
Files icon disappears from the unity launcher
32933
Icon missing when application is launched
118289
In Ubuntu 17.10, how to rearrange icons in dock
115060
How can I stop Ubuntu Dock from extending to the edges?
21639
How do I remove the "from iPhone" dock icon popping up, MacOS High Sierra
81639
How can I change a file type's default program while keeping its current default icon on Windows 7
76083
How can I assign custom icons to folders?
117314
How can I hover over icons in Ubuntu Dock to see all windows of one application?
91717
How to stop partition icons in Unity launcher?
8324
What are possible directories for .desktop files and their icons, and when to use what directory?
7044
How do I change the icon for a particular file type?