Created attachment 159385 [details] Xorg log for the crash SUMMARY After running KDE Neon upgrade, X11 crashes when using Virtualbox VMSVGA with 3D acceleration enabled. STEPS TO REPRODUCE 1. Upgrade KDE Neon 2. Reboot 3. Wait for KDE splash screen to disappear OBSERVED RESULT Screen stays black EXPECTED RESULT KDE desktop shown SOFTWARE/OS VERSIONS Operating System: KDE neon 5.27 KDE Plasma Version: 5.27.5 KDE Frameworks Version: 5.106.0 Qt Version: 5.15.9 Kernel Version: 5.19.0-43-generic (64-bit) Graphics Platform: X11 Processors: 4 × Intel® Core™ i7-7820HQ CPU @ 2.90GHz Memory: 22,7 GiB of RAM Graphics Processor: llvmpipe Manufacturer: innotek GmbH Product Name: VirtualBox System Version: 1.2 ADDITIONAL INFORMATION Virtualbox 7.0.8 with GuestAdditions 7.0.8 (Windows 10 Host)
*** Bug 470508 has been marked as a duplicate of this bug. ***
470509A workaround is to use session "Plasma (Wayland)", but based on my information, it is not production quality for professional use yet.