@ubuntu-kernel-bot uploaded logs as requested Since I can't boot with kernel 4.15, these logs are from my running system with 4.13.
I've just upgraded virtualbox-guest-dkms-hwe, virtualbox-guest-utils-hwe and virtualbox-guest-x11-hwe from version 5.1.34-dfsg-0ubuntu1.16.04.2 to 5.1.38-dfsg-0ubuntu1.16.04.1, but the problem still persists: Setting up virtualbox-guest-utils-hwe (5.1.38-dfsg-0ubuntu1.16.04.1) ... Installing new version of config file /etc/init.d/virtualbox-guest-utils-hwe ... Setting up virtualbox-guest-x11-hwe (5.1.38-dfsg-0ubuntu1.16.04.1) ... Setting up virtualbox-guest-dkms-hwe (5.1.38-dfsg-0ubuntu1.16.04.1) ... Loading new virtualbox-guest-5.1.38 DKMS files... Building for 4.13.0-45-generic and 4.15.0-29-generic Building initial module for 4.13.0-45-generic Done. vboxguest: Running module version sanity check. - Original module - Installation - Installing to /lib/modules/4.13.0-45-generic/updates/dkms/ vboxsf.ko: Running module version sanity check. - Original module - Installation - Installing to /lib/modules/4.13.0-45-generic/updates/dkms/ vboxvideo.ko: Running module version sanity check. - Original module - Installation - Installing to /lib/modules/4.13.0-45-generic/updates/dkms/ depmod.... DKMS: install completed. Building initial module for 4.15.0-29-generic Done. vboxguest: Running module version sanity check. Error! Module version 5.1.38_Ubuntu for vboxguest.ko is not newer than what is already found in kernel 4.15.0-29-generic (5.2.8_KernelUbuntu). You may override by specifying --force. vboxsf.ko: Running module version sanity check. Error! Module version 5.1.38_Ubuntu for vboxsf.ko is not newer than what is already found in kernel 4.15.0-29-generic (5.2.8_KernelUbuntu). You may override by specifying --force. vboxvideo.ko: Running module version sanity check. - Original module - Installation - Installing to /lib/modules/4.15.0-29-generic/updates/dkms/ depmod.... DKMS: install completed. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783267 Title: linux-modules-extra breaks virtualbox guest modules To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783267/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs