BertN45, thanks for the clarification. Given Oracle upstream has indicated on their website the root cause of this issue is due to their Guest Additions version, and the fix is to upgrade only the Guest Additions version, I'll reassign to virtualbox for review: https://www.virtualbox.org/wiki/Downloads
Potential solutions would be: 1) The virtualbox package in 18.04 is updated when Oracle provides the next maintenance release of 5.2.x. 2) Update just virtualbox-guest-x11 to use 5.2.7 Guest Additions while keeping all the other packages the same. ** Package changed: xorg (Ubuntu) => virtualbox (Ubuntu) ** Changed in: virtualbox (Ubuntu) Status: Incomplete => Triaged -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1748729 Title: Xorg freeze Status in virtualbox package in Ubuntu: Triaged Bug description: Host: Ubuntu 18.04, Virtualbox 5.2.6 Guest: Ubuntu GNOME 17.10 and 18.04, using Oracle Guest Additions 5.2.4, or 5.2.7 The problem is the guest's screen almost freezes completely as soon as I maximise any window in the guest. Any mouse click takes 10-60 seconds before the system reacts to it. I am not using Oracle Guest Additions 5.2.6 as the guest won't boot. Windows 7 and 10 work without any problem. WORKAROUND: Disable 3D acceleration. WORKAROUND: Use as a guest Ubuntu Mate or Xubuntu. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu4 ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13 Uname: Linux 4.13.0-32-generic x86_64 ApportVersion: 2.20.8-0ubuntu8 Architecture: amd64 CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sun Feb 11 06:31:52 2018 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GpuHangFrequency: Continuously GpuHangReproducibility: Yes, I can easily reproduce it GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter [80ee:beef] (prog-if 00 [VGA controller]) InstallationDate: Installed on 2017-12-22 (50 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171219) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: innotek GmbH VirtualBox ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic root=UUID=f3311827-9a0c-490d-a707-d4d037152c4d ro quiet splash Renderer: Software SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) 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 2.4.89-1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.3.3-0ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 17.3.3-0ubuntu1 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1748729/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp