[Bug 1608753] Re: Cannot build nvidia driver via dkms because compiler doesn't match kernel

[Matthias Klose]

this is not a compiler issue. Apparently you have to build the modules
and the kernel with the same version of the compiler, which is now
5.4.x. We usually don't update the dependencies packages, the symlinks
stay the same.

** Changed in: gcc-defaults (Ubuntu)
       Status: Triaged => Invalid

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Title:
  Cannot build nvidia driver via dkms because compiler doesn't match
  kernel

Status in One Hundred Papercuts:
  Triaged
Status in dkms package in Ubuntu:
  Invalid
Status in gcc-defaults package in Ubuntu:
  Invalid

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 at 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)

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