Public bug reported:

I can use the system for a while, then at random, the screen blinks and 
freezes. Must reboot.
Seems to happen both with Wayland and Xorg.

ProblemType: KernelOops
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-8-generic 4.18.0-8.9
ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7
Uname: Linux 4.18.0-8-generic x86_64
Annotation: Your system might become unstable now and might need to be 
restarted.
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  greg       2039 F.... pulseaudio
 /dev/snd/controlC1:  greg       2039 F.... pulseaudio
Date: Tue Oct  2 15:56:23 2018
Failure: oops
InstallationDate: Installed on 2018-09-28 (7 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Beta amd64 (20180927)
IwConfig:
 lo        no wireless extensions.
 
 eno1      no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. Default string
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-8-generic 
root=UUID=ce06b10d-2a7f-49db-a15b-85554d9a7e4d ro quiet splash vt.handoff=1
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: kerneloops-daemon N/A
RfKill:
 
SourcePackage: linux
Title: watchdog: BUG: soft lockup - CPU#10 stuck for 22s! [gnome-shell:1112]
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/07/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F23
dmi.board.asset.tag: Default string
dmi.board.name: X99-UD4-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF23:bd06/07/2017:svnGigabyteTechnologyCo.,Ltd.:pnDefaultstring:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnX99-UD4-CF:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: Default string
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-kerneloops cosmic kernel-oops

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https://bugs.launchpad.net/bugs/1796385

Title:
  watchdog: BUG: soft lockup - CPU#10 stuck for 22s! [gnome-shell:1112]

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