Hello Cheluskin,
you use some oldfashioned kernel parameters:
[ 0.000000] Kernel command line: root=UUID=b908c0f2-aa2d-4810-91c7-8204f49e981c noagp vga=0x324 init=/lib/systemd/systemd rd.md=0 rd.dm=0 rd.luks=0 rd.lvm=0 rootflags=noatime splash
Why did you put "noagp vga=0x324" in your kernel commandline?
The vga=0x324 interferes with kernel mode setting (KMS) which is essential since kernel 2.6.30 from 2009.
But how should your kernel even communicate with your graphics card without its AGPGART?
In your screenshot you can see the result of the "noagp" parameter:
[ 1.929874] Linux agpgart interface v0.103
[ 1.929969] Failed to find cpu0 device node
greetings
musca