Upon entering suspend mode, sometimes the fan will go full speed. It could be the case fan, or the CPU fan. It happens about half the time. The fan will remain at full speed while in suspend until the system is resumed and then it will work normally.
Fan speed is controlled by the BIOS. My motherboard is an Intel DH77DF.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: acpid 1:2.0.16-1ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu7
Architecture: amd64
Date: Fri Sep 7 08:41:04 2012
ExecutablePath: /usr/sbin/acpid
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
ProcEnviron:
PATH=(custom, no user)
TERM=linux
SourcePackage: acpid
UpgradeStatus: Upgraded to quantal on 2012-08-26 (11 days ago)
The fans running full speed also occurs occasionally when I power off the computer.