SUMMARY *** neon-unstable-20231109-1616 The installation window is transparent *** STEPS TO REPRODUCE 1. Boot up live image 2. Search for "Install system" script in Application Launcher and start it OBSERVED RESULT Shadow of the window and window controls are drawn, but no content (window is transparent) EXPECTED RESULT Window should show content SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon Unstable Edition (2023-11-09) (available in About System) KDE Plasma Version: 5.27.80 KDE Frameworks Version: 5.245.0 Qt Version: 6.6.0 ADDITIONAL INFORMATION Had to set VirtualBox to enable 3D-Accelaration, otherwise neon won't boot up (see #476629) Other windows (e.g. Dolphin, Systemsettings, InfoCenter) show up fine
I can reproduce this. The problem with the transparent windows occurs for any software that you try to start with superuser rights. Calamares can be started without issue if it is not started as a superuser, but then it obviously does not work to install the system.
I found a workaround: this issue does not occur in the X11 session. To get to the X11 session, you need to disable automatic login, log out, and then log in to Plasma (X11) using a blank password.
Can confirm on VirtualBox with 3D acceleration enabled. Also, this occurs to Qt6 apps running as root (for example Okular) on Wayland. Calamares running as normal user is not transparent (but it's no longer possible to install).
i just ran up a new virt-manager instance on the latest unstable iso. calamares was indeed not happy but an apt update && apt dist-upgrade later and now happy days. calamares is installing a new virtual machine. that's using qemu as the backend so maybe it's a virtualbox thing.
It still does not work with the newest unstable image (2023-11-19) and after running sudo apt update && sudo pkcon update Tested in VirtualBox 6.1 and 7.0 on Ubuntu 22.04 as host. This might be a problem only within VirtualBox (or even with certain graphics settings), I've not yet tested it on real hardware
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I was not able to reproduce it on non-Virtualbox setup, so it might be a Virtualbox thing.
Fixed in latest unstable ISO. Needed to backports a newer version of xwayland.