** Attachment added: "The corresponding Xorg process core dump (Note: 3.2 GB 
when expanded)"
   
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1815693/+attachment/5239134/+files/xorg.dump.7z

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https://bugs.launchpad.net/bugs/1815693

Title:
  Kubuntu 18.10 Xorg severe memory leak

Status in xorg package in Ubuntu:
  New

Bug description:
  Suddenly sometimes during the past two weeks my kubuntu installation
  has started to freeze up. I can't remember what apt upgrade that
  caused it, and I have done several the last few days hoping for it to
  be resolved.

  I didn't know what was causing it as I hadn't made any other changes
  expect for the odd apt upgrade. Before that I had just finished a
  several weeks long session of intense work around the clock without
  having to reboot even once. Suddenly it is now freezing up within
  hours. Even without doing anything, just leaving the computer alone.
  However, yesterday I accidentally discovered that my RAM was filled
  up. More than filled up, even all swap was full. And before I could
  close anything down it froze up again.

  So TLDR; I have today logged the memory consumption while I was
  handling some bills and linked is a log of constantly increasing Xorg
  memory usage. So it goes until it chokes the machine and only a hard
  reboot is possible.

  My installed RAM is 10GB. Swap is 6GB. Please refer to the linked file to see 
how the Xorg usage creeps up.
  https://www.dropbox.com/s/nf1ev2dxdlc6gqw/xorg_leak.log?dl=0

  I should add that this bug seems specific to Kubuntu, and (I guess)
  associated with running under Virtualbox. I have another Ubuntu 18.04
  (i.e. not _K_ubuntu) running on bare metal and it is not having any
  problems.

  Please advise what additional information I should post to have this
  resolved.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: xorg 1:7.7+19ubuntu8
  ProcVersionSignature: Ubuntu 4.18.0-15.16-generic 4.18.20
  Uname: Linux 4.18.0-15-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13.2
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: KDE
  Date: Wed Feb 13 01:00:13 2019
  DistUpgraded: 2019-02-09 11:54:01,040 ERROR got error from PostInstallScript 
./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process 
“./xorg_fix_proprietary.py” (No such file or directory) (8))
  DistroCodename: cosmic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   VMware SVGA II Adapter [15ad:0405] (prog-if 00 [VGA controller])
     Subsystem: VMware SVGA II Adapter [15ad:0405]
  InstallationDate: Installed on 2015-10-22 (1209 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 003: ID 80ee:0021 VirtualBox USB Tablet
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: innotek GmbH VirtualBox
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-15-generic 
root=UUID=8959cd47-b52f-4a6e-97bb-5d509e3c2480 ro quiet splash
  Renderer: Software
  SourcePackage: xorg
  UpgradeStatus: Upgraded to cosmic on 2019-02-09 (3 days ago)
  dmi.bios.date: 12/01/2006
  dmi.bios.vendor: innotek GmbH
  dmi.bios.version: VirtualBox
  dmi.board.name: VirtualBox
  dmi.board.vendor: Oracle Corporation
  dmi.board.version: 1.2
  dmi.chassis.type: 1
  dmi.chassis.vendor: Oracle Corporation
  dmi.modalias: 
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
  dmi.product.family: Virtual Machine
  dmi.product.name: VirtualBox
  dmi.product.version: 1.2
  dmi.sys.vendor: innotek GmbH
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.95-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.2-0ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-3ubuntu2.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3

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