It turns out that if you installed Ubuntu 18.04 LTS using the .iso images
released in April 2018, you may kept back with Linux 4.18 and old Xorg display
server.
I updated kernel 5.0, Xorg, and graphics drivers by opting-in to “hardware
enablement” (HWE).
In the terminal:
sudo apt install --install-recommends linux-generic-hwe-18.04 xserver-
xorg-hwe-18.04
It solved the problem.
** Changed in: lightdm (Ubuntu)
Assignee: (unassigned) => Diego (diego-luna-1711)
** Changed in: lightdm (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1853786
Title:
Fullscreen stuck in various applications. Ubuntu 18.04 with Unity.
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