<!-- TITLE: ERR-SYS-00001: Disappearing Windows and Menus with KDE/Plasma Desktop using Intel DDX -->
<!-- SUBTITLE: Intel X11/XFree86 Driver Issue and an Workaround -->
# Summary
When using Plasma 5.11.5 and KDE Frameworks 5.41.0 (and earlier) with a Intel X11/XFree86 driver (`xf86-video-intel`), some windows - specifically, those utillising GNOME/GTK+ 3 Client Side Decoration (or VTE 2.90?) - could fail to display on the screen. A taskbar entry of the window could be found, and a window preview should also display correctly. The window is not displaying, neither does it respond to any window management event: no cursor change when moving to the edge of the offending windows. Here are two instances of the issue:
- Tilix
- GNOME Terminal
It is also discovered that the list of word candidates for Fcitx could become invisible.
# Possible Cause
Not yet identified.
# Fixed Version
## System Releases
Tarball system releases dated 20180126 or later will no longer include the Intel DDX (`xf86-video-intel`), as we removed `xf86-video-intel` as part of the `x11-base` metapackage. If your system still has this package installed, upon system update, you should be prompted that `xf86-video-intel` is no longer needed - follow the instruction on screen to remove this package automatically.
## Workaround
A workaround has been identified - and this issue should only happen on a computer using Intel graphics (GMA, HD, UHD, etc.). To workaround this issue, you should switch to the "Modesetting" X11/XFree86 driver. To switch to this driver, simply add and apply the following configuration file with the instructions below:
## Create a Custom X11 Configuration
Using your favourite editor (assuming `nano` here), create a custom X11 configuration file:
`sudo nano /etc/X11/xorg.conf.d/20-modesettings.conf`
Input in the following content:
```
Section "Device"
Identifier "Intel Graphics"
Driver "modesetting"
Option "AccelMethod" "glamor"
Option "DRI" "3"
EndSection
```
And finally, `Ctrl-X` then `Y` to save the file.
## Restart Your X11 Session
Using the following command:
`sudo systemctl restart display-manager`.
And you should be switched to the "Modesetting" driver, and that windows should be displaying correctly.