I recently connected my laptop running Ubuntu 16.04 LTS to an external display. Since then, only my Firefox and Thunderbird Icons are appearing blurred. After a lot of searching, this is what I have gathered so far.
a) My launcher icon size is set to an even value (odd values having blurred icons is a known defect for Ubuntu)
b) When I removed the display settings by running rm ~/.config/monitors.xml in the command line and then restarted, the icons where working properly for the first few seconds. Then they reverted back to their previous blurred state.
Please help.