[Users have reported][1] and I have confirmed this behavior: standby fails in Ubuntu 10.4 with all updates applied to date, but only when an SD card is present and mounted in the system at the time the standby is initiated.
I'm using a Dell Latitude X1 with a Transcend 4GB disk inserted. If I remove or unmount the media before going into standby, the system will standby and resume without problems.
A workaround is provided in the referenced report, but this is clumsy and inadequate. Please consider implementing a workaround in the core standby routine.
The system should standby and resume without any workaround and without on resume launching the drive as if it had just been inserted.
[1] http://ubuntuforums.org/showthread.php?p=9215976
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: upstart 0.6.5-6
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
Architecture: i386
Date: Mon Jul 26 15:14:59 2010
ExecutablePath: /sbin/init
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron: PATH=(custom, no user)
SourcePackage: upstart
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