14.04 upgrade display driver missing on Acer AMD64 laptop

[Janos G. Komaromi]

After a flawless upgrade I noticed that display is only generic, "default", i.e. 1024x768. When I try AMD Catalyst Control Center it complains that "No AMD graphics driver is installed or the display driver is not functioning properly". When I run the recommended command aticonfig it reports that "No supported adapter detected". lspci does show ATI Radeon HD 3200 controller.

P.S. upgrade process is well designed, giving info and appropriate choices, congrats to developers - Janos

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.4
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CrashDB: ubuntu
Date: Mon Sep 1 10:10:23 2014
InstallationDate: Installed on 2013-10-31 (304 days ago)
InstallationMedia: Xubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to trusty on 2014-08-31 (0 days ago)
VarLogDistupgradeTermlog:

[Daniel Letzeisen (dtl131)]

Again, AMD dropped proprietary support for your GPU.

[Janos G. Komaromi (jankom)]

OK, thanks for the link. I removed fglrx, installed mesa-utils, rebooted, and now display (including cursor behaviour) is working fine. Note, I do not run games, but movies in full screen display OK.

I do agree with one of the comments in the link that this problem should be noted in the distro-upgrade info - Janos