Thomas Zimmermann composed on 2021-12-23 11:00 (UTC+0100):
If you install and boot the kernel, you should ideally see no difference. Once booted the hardware's driver will do the graphics output. To test if you booted with generic DRM, do
dmesg | grep drm
on the command line. The output should mention 'simpledrm' somewhere.
Another without "simple" in dmesg: # inxi -SGayz System: Kernel: 5.15.11-5.g730a488-default x86_64 bits: 64 compiler: gcc v: 11.2.1 parameters: root=LABEL=ostwK4h50 ipv6.disable=1 net.ifnames=0 noresume mitigations=auto consoleblank=0 vga=791 5 Console: pty pts/0 DM: KDM Distro: openSUSE Tumbleweed 20211224 Graphics: Device-1: NVIDIA GF119 [NVS 310] vendor: Hewlett-Packard driver: nouveau v: kernel bus-ID: 01:00.0 chip-ID: 10de:107d class-ID: 0300 Display: server: X.org 1.21.1.2 driver: loaded: modesetting unloaded: fbdev,vesa alternate: nouveau,nv,nvidia Message: Advanced graphics data unavailable for root. # dmesg | grep -i simple # dmesg | grep -i drm [ 19.519379] systemd[1]: Starting Load Kernel Module drm... [ 19.752729] systemd[1]: modprobe@drm.service: Deactivated successfully. [ 19.752893] systemd[1]: Finished Load Kernel Module drm. [ 28.503648] nouveau 0000:01:00.0: DRM: VRAM: 512 MiB [ 28.503655] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB [ 28.503660] nouveau 0000:01:00.0: DRM: TMDS table version 2.0 [ 28.503663] nouveau 0000:01:00.0: DRM: DCB version 4.0 [ 28.503666] nouveau 0000:01:00.0: DRM: DCB outp 00: 020003a6 0f220010 [ 28.503670] nouveau 0000:01:00.0: DRM: DCB outp 01: 02000362 00020010 [ 28.503674] nouveau 0000:01:00.0: DRM: DCB outp 02: 048113b6 0f220010 [ 28.503677] nouveau 0000:01:00.0: DRM: DCB outp 03: 04011372 00020010 [ 28.503681] nouveau 0000:01:00.0: DRM: DCB conn 00: 00410146 [ 28.503684] nouveau 0000:01:00.0: DRM: DCB conn 01: 00820246 [ 28.504749] nouveau 0000:01:00.0: DRM: MM: using COPY0 for buffer copies [ 28.556360] nouveau 0000:01:00.0: DRM: allocated 2560x1440 fb: 0x60000, bo 000000001481367f [ 28.557974] fbcon: nouveaudrmfb (fb0) is primary device [ 28.670706] nouveau 0000:01:00.0: [drm] fb0: nouveaudrmfb frame buffer device [ 28.684343] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 0 # 0_0 -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata