(mini) [~] dmesg | grep simple
[    0.401613] [drm] Initialized simpledrm 1.0.0 20200625 for be3a18000.framebuffer on minor 0
[    0.445414] simple-framebuffer be3a18000.framebuffer: [drm] fb0: simpledrmdrmfb frame buffer device

[root@fedora xorg.conf.d]# dmesg | grep -i simple
[    8.701705] simple-framebuffer bd4ea0000.framebuffer: [drm] could not acquire memory region [mem 0xbd4ea0000-0xbd5e3ffff flags 0x200]
[    8.712532] [drm] Initialized simpledrm 1.0.0 20200625 for bd4ea0000.framebuffer on minor 0
[    8.725559] simple-framebuffer bd4ea0000.framebuffer: [drm] fb1: simpledrmdrmfb frame buffer device

[root@fedora xorg.conf.d]# dmesg | grep efifb
[    1.137506] efifb: probing for efifb
[    1.137529] efifb: framebuffer at 0xbd4ea0000, using 16000k, total 16000k
[    1.137530] efifb: mode is 2560x1600x32, linelength=10240, pages=1
[    1.137532] efifb: scrolling: redraw
[    1.137532] efifb: Truecolor: size=2:10:10:10, shift=30:20:10:0