"About the virtualbox-guest-dkms package, I'm not sure it is really needed in 16.04 as xenial kernel already packs virtualbox's guest modules(you can lsmod it even without installing the package)"
Actually, I had the same problem. Installing this package solved it. Error gone and pasting and screen resize is now working fine. Thanks for the help. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1580482 Title: Virtualbox guest additions isn't working properly in Ubuntu 16.04 Status in linux package in Ubuntu: Incomplete Status in ubuntu-drivers-common package in Ubuntu: Confirmed Status in virtualbox package in Ubuntu: Incomplete Bug description: ## Symptoms ## * OpenGL processing offloading is not supported(3D hardware acceleration is enabled in VM settings and is available on Intel Graphics host) * VBoxClient warns about "Failed to connect to the ViratualBox kernel service, rc=VERR_ACCESS_DENIED"(refer attached screenshot) You may checkout the screen record for what exactly this issue is about: https://www.youtube.com/watch?v=aB1sb3D4Q9g ## Workarounds ## Install VirtualBox provided guest additions iso from the menu works ## Additional Information ## * I uses the VirtualBox from upstream on the host side, the version is 5.0.20 * Note that the Ubuntu Kernel bundled with 16.04 has integrated VirtualBox guest modules(vboxguest, vboxsf, and vboxvideo specifically) for unknown reason, this bug is reproduced *without* the virtualbox-guest-dkms package(since the Additional Drivers interface doesn't provide me the option to do so(the option is greyed-out, refer attached screenshot)) * I have another 14.04 VM and it's OpenGL offloading works, so it's not likely that the host isn't providing proper OpenGL functionallity ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: virtualbox-guest-x11 5.0.18-dfsg-2build1 ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: Unity Date: Wed May 11 12:08:31 2016 InstallationDate: Installed on 2016-01-07 (124 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: virtualbox UpgradeStatus: Upgraded to xenial on 2016-04-07 (33 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1580482/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
