fglrx-updates-core 2:15.200-0ubuntu4.1: fglrx-updates-core kernel module failed to build

[Dom]

My desktop is what appears to be 16 colours, however the icons and the browser all appear 32 bit high colour. This happened after I was forced to choose to boot into "restore" mode with the latest kernel, for the system would not boot in normal mode with the latest kernel. Using a previous kernel boots up OK, though.

After booting, a manual system update was performed however the following error message was displayed at the end of the update:

"Your system is providing 3D via software rendering rather than hardware rendering.
This is a compatibility mode which should display 3D graphics properly but the
performance may be very poor. If the problem you're reporting is related to graphics
performance, your real question may be why X didn't use hardware acceleration for your system."

System information

$ uname -a
Linux xxxx-xxxx 3.19.0-26-lowlatency #27-Ubuntu SMP PREEMPT Tue Jul 28 19:06:58 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -rd
Description: Ubuntu 15.04
Release: 15.04

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: fglrx-updates-core 2:15.200-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.19.0-26.27-lowlatency 3.19.8-ckt4
Uname: Linux 3.19.0-26-lowlatency x86_64
.tmp.unity.support.test.1:

ApportVersion: 2.17.2-0ubuntu1.3
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: 3.19.0-26-generic
Date: Thu Aug 13 21:06:50 2015
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
DkmsStatus:
 fglrx-updates-core, 15.200: added
 vboxhost, 5.0.0, 3.19.0-23-generic, x86_64: installed
 vboxhost, 5.0.0, 3.19.0-26-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M] [1002:68c1] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Mobility Radeon HD 5650 [103c:1448]
InstallationDate: Installed on 2015-05-01 (103 days ago)
InstallationMedia: It
MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
PackageVersion: 2:15.200-0ubuntu4.1
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-26-lowlatency root=UUID=8ae07448-9185-47d4-bb4e-5639e6e41bb3 ro recovery nomodeset
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4.2
Renderer: Software
SourcePackage: fglrx-installer-updates
Title: fglrx-updates-core 2:15.200-0ubuntu4.1: fglrx-updates-core kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/07/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.29
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1448
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 65.38
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.29:bd11/07/2011:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr048E100000242B10000020000:rvnHewlett-Packard:rn1448:rvr65.38:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv6 Notebook PC
dmi.product.version: 048E100000242B10000020000
dmi.sys.vendor: Hewlett-Packard
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 10.5.9-2ubuntu1~vivid1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid1
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: Thu Aug 13 20:50:02 2015
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.1-0ubuntu3