Public bug reported:

Have two machines with same chip (Radeon XPRESS 200M), this one running
XUbuntu 14.04 (with Utopic driver) and other one running Mint 17.1 XFCE
(apparently with LTS driver). Both exhibit same random freezing.

When frozen, fans spin more and more (CPU on 100%, generating heat?),
not possible to switch to console, no sysrq-combinations work, nothing
out of the ordinary to be found in the logs afterwards.

Have Memtested, checked SMART-info. I tried linux-crashdump on the Mint-
machine but I couldn't find any file it would have created. Maybe it
didn't.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-video-ati-lts-utopic 1:7.4.0-2ubuntu2~trusty1
ProcVersionSignature: Ubuntu 3.16.0-34.47~14.04.1-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.9
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Apr 15 23:03:31 2015
InstallationDate: Installed on 2015-04-14 (0 days ago)
InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 
(20150218.1)
SourcePackage: xserver-xorg-video-ati-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: xserver-xorg-video-ati-lts-utopic (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1444680

Title:
  System freezes randomly

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