When examining repos it seems like the inconsistency was introduced in xenial-updates where packages in the build toolchain was bumped from 5.3.1 to 5.4.0 while the supplied kernel still is built with GCC 5.3.1 and the dependecy-packages that provide symlinks to tool-binaries also remain at version 5.3.1
Package xenial xenial-security xenial-updates ------------------------------------------------------------------------ gcc 4:5.3.1-1ubuntu1 gcc-5 5.3.1-14ubuntu2 5.3.1-14ubuntu2.1 5.4.0-6ubuntu1~16.04.1 The issue of inconsistent versions relates to a number of packages in the chain of build-tools (binaries and libraries) tagged with versions 5.3.1 and/or 5.4.0. DKMS is not to blame. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to dkms in Ubuntu. https://bugs.launchpad.net/bugs/1608753 Title: Cannot build nvidia driver via dkms because compiler doesn't match kernel Status in dkms package in Ubuntu: Confirmed Bug description: The kernel installed with 16.04 was built with gcc 5.3.1, but the default compiler installed is 5.4.0 - as such, DKMS refuses to build the nvidia video card driver due to the mismatch. Either build the kernel with the shipping compiler or ship the compiler that was used to build the kernel. cat /proc/version Linux version 4.4.0-34-lowlatency (buildd@lgw01-20) (gcc version 5.3.1 20160413 (Ubuntu 5.3.1-14ubuntu2.1) ) #53-Ubuntu SMP PREEMPT Wed Jul 27 19:23:26 UTC 2016 gcc --version gcc (Ubuntu 5.4.0-6ubuntu1~16.04.1) 5.4.0 20160609 lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: dkms 2.2.0.3-2ubuntu11.1 ProcVersionSignature: Ubuntu 4.4.0-34.53-lowlatency 4.4.15 Uname: Linux 4.4.0-34-lowlatency x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Mon Aug 1 21:26:15 2016 PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: dkms UpgradeStatus: Upgraded to xenial on 2016-07-23 (9 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dkms/+bug/1608753/+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
