Xorg on Bionic went from "totally working" with nVidia drivers, to "OutputClass is Broken and doesn't support 'Option' and 'ModulePath'" for some reason. See the Xorg logs attached.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 390.25 Wed Jan 24 20:02:43 PST 2018
GCC version: gcc version 7.3.0 (Ubuntu 7.3.0-5ubuntu1)
.proc.driver.nvidia.warnings.fbdev:
Your system is not currently configured to drive a VGA console
on the primary VGA device. The NVIDIA Linux graphics driver
requires the use of a text-mode VGA console. Use of other console
drivers including, but not limited to, vesafb, may result in
corruption and stability problems, and is not supported.
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
BootLog:
/dev/nvme0n1p3: clean, 588184/15138816 files, 9668625/60549376 blocks
/dev/nvme0n1p3: clean, 594889/15138816 files, 9852207/60549376 blocks
/dev/nvme0n1p3: clean, 601030/15138816 files, 9914821/60549376 blocks
Date: Tue Feb 27 06:27:28 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus: nvidia, 390.25, 4.15.0-10-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Subsystem: ASUSTeK Computer Inc. Device [1043:8694]
NVIDIA Corporation GM204 [GeForce GTX 980] [10de:13c0] (rev a1) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. GM204 [GeForce GTX 980] [1043:8513]
InstallationDate: Installed on 2018-02-27 (0 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180225)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-10-generic.efi.signed root=UUID=9b6920f1-6ce1-4284-a76f-e0474605c41f ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/14/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0402
dmi.board.asset.tag: Default string
dmi.board.name: ROG STRIX Z370-G GAMING (WI-FI AC)
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0402:bd09/14/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGSTRIXZ370-GGAMING(WI-FIAC):rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.90-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.3.3-0ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 17.3.3-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
Please note that this happened after an update from a fresh install *and* of a two-days-old install; I'm using the Kubuntu daily installer from Feb 25th.