Grey screen or problem with display with Debian 12

[FX8370core]

There is an issue with the VBox and Debian 12 Bookworm as well as Devuan Daedalus in efi mode: the graphical install ends in a "cannot open display 0", the expert install in a grey screen. Whats wrong here?

Attached are two logs.

FX

Log2.zip

(31.44 KiB) Downloaded 275 times

Log1.zip

(33.94 KiB) Downloaded 258 times

Edith: There is a bug report: Debian Bug report logs - #1036310 - bookworm installer hangs in efi mode on virtualbox 7.0.8

[fth0]

FWIW, the VBox.log files do not indicate any problem to me. The (virtual) display is initialized to 1024x768x32.

[eebssk1]

If anyone come to this thread with such issue, this is the workaround > https://bugs.debian.org/cgi-bin/bugrepo ... 310;msg=60
Still persists with debian 12.4 iso VBox 7.0.13 beta

(mod edit: copying the workaround post text here, in case the link goes stale)

Encountering the same issue, I can confirm it still persists in RC4.
However, digging a bit deeper with the error I found on dmesg: "x86/PAT:
bterm:260: map pfn expected mapping type uncached-minus for ..., got
write-combining", I found this workaround:
Disabling paravirtualization in virtualbox acceleration or switching it to
legacy results in a properly booting installer.

Kind regards,
Erwin

[FX8370core]

I can confirm that the workaround does its job alright.