Dear Backport-Maintainer, Dear Gianfranco, Package: virtualbox Architecture: amd64 Version: 5.2.24-dfsg-4~bpo9+1 stopped working when I've upgraded one of my Stretch computers to linux-image-4.9.0-9-amd64, linux-headers-4.9.0-9-amd64, .. Package: linux-image-4.9.0-9-amd64 Architecture: amd64 Version: 4.9.168-1+deb9u2 The message is virtualbox WARNING: The character device /dev/vboxdrv does not exist. Please install the virtualbox-dkms package and the appropriate headers, most likely linux-headers-amd64. You will not be able to start VMs until this problem is fixed. though both packages are installed in the latest available version. LANG=C apt-get install virtualbox-dkms linux-headers-amd64 linux-headers-amd64 is already the newest version (4.9+80+deb9u7). virtualbox-dkms is already the newest version (5.2.24-dfsg-4~bpo9+1). status -l virtualbox and dmesg lead to [ 11.662566] vboxdrv: disagrees about version of symbol cpu_tlbstate [ 11.662568] vboxdrv: Unknown symbol cpu_tlbstate (err -22) According to https://backports.debian.org/FAQ/ this list is the right place to report. It is not very important to me, but I thought you may want to know. My next steps will be trying virtualbox-source and if this fails resorting to the Oracle version. Thanks for maintaining Free Software! Best Regards, Bernhard -- www.intevation.de/~bernhard +49 541 33 508 3-3 Intevation GmbH, Osnabrück, DE; Amtsgericht Osnabrück, HRB 18998 Geschäftsführer Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner
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