BertN45, given 3D acceleration is a WORKAROUND, Low is in line with its definition noted in https://wiki.ubuntu.com/Bugs/Importance . To advise, the potential difficulty in solving a bug has no impact on Importance.
Despite this: 1) What version of VirtualBox are you using on the host? 2) Did this issue start happening in the guest after an update from either the guest, or host? If so, which specifically? 3) In your last comment, it appears you are indicating that this only happens in 17.10 GNOME, but not with 17.10 Xubuntu. Could you please clarify? 4) Does installing in the guest the package virtualbox-guest-x11 and rebooting improve the situation? ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- 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 xorg package in Ubuntu: Incomplete Bug description: I run Ubuntu 18.04 in Virtualbox 5.2.6 with as host OS; Ubuntu 17.10 with the propriety Nvidia driver 340 as suggested by Ubuntu. The screen almost freezes completely as soon as I maximise any window in the guest OS Ubuntu 18.04. Any mouse click takes 10-60 seconds before the system reacts to it. It took a long time to generate this bug-report. I had the same problem with Ubuntu 17.10, while Guest OSes Ubuntu Mate 17.10, Xubuntu 17.10, and Peppermint 8. Windows 7 and 10 work without any problem. WORKAROUND: Disable 3D acceleration. 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/xorg/+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