SUMMARY "neon-developer-20240104-1511.iso" shows an error and a black screen STEPS TO REPRODUCE 1. Download https://files.kde.org/neon/images/developer/current/neon-developer-20240104-1511.iso 2. Follow the instructions from https://community.kde.org/Get_Involved/development/Developing_in_a_virtual_machine OBSERVED RESULT 1. In Virtualbox, see a "[FAILED] Failed to start Migrate UID 1000 from semi-wrong groups to correct ones..." 2. In Virtualbox, see a black screen. EXPECTED RESULT 1. In Virtualbox, see things working. ADDITIONAL INFORMATION In https://pointieststick.com/2024/01/12/the-last-few-weeks-in-kde-its-coming-its-coming-its-coming/ we can see a comment from another user: "KDE Neon unstable [...] doesn’t even start graphics interface upon booting; and as I found on reddit, apparently it rarely works for anyone". Pressing Enter doesn't change the situation (https://bugs.kde.org/show_bug.cgi?id=434229).
After performing more tests: If the Shift key is pressed when booting the virtual machine, then a menu with "Try without installing", "Install", etc. is seen. However, in the end, the result is the same (the "[FAILED] Failed to start Migrate UID 1000 from semi-wrong groups to correct ones..." error message, a black screen and virtual machine that looks like if it were stalled). The virtual machine reacts to REISUB commands like the B one: VBoxManage controlvm NAME_OF_THE_VIRTUAL_MACHINE keyboardputscancode 1d 38 54 30 b0 d4 b8 9 That happens for example using Virtualbox 7.0.10 in one computer, and Virtualbox 7.0.6 in another computer.
In the last comment, I meant `9d` instead of `9`. Thanks.
The same happens using Virtualbox 7.0.12, 6.1.38 or 6.1.48.
The end result is the same trying the live CD in: - the physical machine (no virtual machine involved), - another computer (no virtual machine involved).
Closing this bug report as a new version of this .iso has been released.