fglrx-core 2:15.101-0ubuntu1: fglrx-core kernel module failed to build [error: implicit declaration of function ‘__get_cpu_var’]

[Syne Ardwin]

fglrx-core kernel module fails to build on Ubuntu 15.04 kernel 3.19.0-15,3.19.0-18, 3.19.0-20, 3.19.0-21. All with the same error.

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: fglrx-core 2:15.101-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
Uname: Linux 3.19.0-18-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
DKMSKernelVersion: 3.19.0-21-generic
Date: Fri Jun 19 11:46:23 2015
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
DkmsStatus: fglrx-core, 15.101: added
DuplicateSignature: dkms:fglrx-core:2:15.101-0ubuntu1:/var/lib/dkms/fglrx-core/15.101/build/2.6.x/firegl_public.c:4819:5: error: implicit declaration of function ‘__get_cpu_var’ [-Werror=implicit-function-declaration]
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Cayman XT [Radeon HD 6970] [1002:6718] (prog-if 00 [VGA controller])
   Subsystem: Hightech Information System Ltd. Device [1787:2010]
InstallationDate: Installed on 2015-05-23 (26 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: MSI MS-7924
PackageVersion: 2:15.101-0ubuntu1
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-18-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4
SourcePackage: fglrx-installer
Title: fglrx-core 2:15.101-0ubuntu1: fglrx-core kernel module failed to build
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/22/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V2.4
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H97M-G43(MS-7924)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.4:bd07/22/2014:svnMSI:pnMS-7924:pvr1.0:rvnMSI:rnH97M-G43(MS-7924):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7924
dmi.product.version: 1.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Fri Jun 19 11:36:38 2015
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.1-0ubuntu3
xserver.video_driver: radeon

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1431068, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.