Bionic LTS:  dmesg
[    0.000000] Linux version 4.15.0-20-generic (buildd@lgw01-amd64-039) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17)
[    0.000000] Command line: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-20-generic root=UUID=1b414f6c-af2f-4116-a11c-01762878cf09 ro rootflags=subvol=@ nomodeset acpi_enforce_resources=lax pcie_aspm=off enable_mtrr_cleanup mtrr_spare_reg_nr=3 mtrr_gran_size=128M mtrr_chunk_size=256M
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] x86/fpu: x87 FPU will use FXSAVE
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009dbff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009f800-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000bfedffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000bfee0000-0x00000000bfee2fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x00000000bfee3000-0x00000000bfeeffff] ACPI data
[    0.000000] BIOS-e820: [mem 0x00000000bfef0000-0x00000000bfefffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000e0000000-0x00000000e3ffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000ffffffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] random: fast init done
[    0.000000] SMBIOS 2.4 present.
[    0.000000] DMI: Gigabyte Technology Co., Ltd. P35-DQ6/P35-DQ6, BIOS F9 06/22/2009

...

Apr 28 15:46:26 syslog1db3 kernel: [    3.025842] nouveau 0000:01:00.0: fifo: read fault at 0000198000 engine 05 [BAR2] client 07 [HOST_CPU] reason 02 [PTE] on channel -1 [003fe36000 unknown]
Apr 28 15:46:26 syslog1db3 kernel: [    3.026291] nouveau 0000:01:00.0: DRM: allocated 1600x900 fb: 0x60000, bo 000000004f60934e
Apr 28 15:46:26 syslog1db3 kernel: [    3.028035] fbcon: nouveaufb (fb0) is primary device
Apr 28 15:46:26 syslog1db3 kernel: [    3.028095] Console: switching to colour frame buffer device 128x48
Apr 28 15:46:26 syslog1db3 kernel: [    3.028119] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
Apr 28 15:46:26 syslog1db3 kernel: [    3.060003] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 0
Apr 28 15:46:26 syslog1db3 kernel: [    3.060037] nouveau 0000:02:00.0: enabling device (0000 -> 0003)
Apr 28 15:46:26 syslog1db3 kernel: [    3.060212] nouveau 0000:02:00.0: NVIDIA GK208B (b06070b1)
Apr 28 15:46:26 syslog1db3 kernel: [    3.123977] clocksource: Switched to clocksource tsc
Apr 28 15:46:26 syslog1db3 kernel: [    3.192698] nouveau 0000:02:00.0: bios: version 80.28.78.00.06
Apr 28 15:46:26 syslog1db3 kernel: [    3.194153] nouveau 0000:02:00.0: fb: 1024 MiB DDR3

..
Apr 28 15:46:26 syslog1db3 gpu-manager[530]: /etc/modprobe.d is not a file
Apr 28 15:46:26 syslog1db3 gpu-manager[530]: Error: can't open /lib/modules/4.15.0-20-generic/updates/dkms
Apr 28 15:46:26 syslog1db3 gpu-manager[530]: Error: can't open /lib/modules/4.15.0-20-generic/updates/dkms
Apr 28 15:46:26 syslog1db3 systemd[1]: Started Detect the available GPUs and deal with any system changes.