This bug was fixed in the package laptop-mode-tools - 1.57-1ubuntu1
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laptop-mode-tools (1.57-1ubuntu1) natty; urgency=low
* Merge with Debian unstable. Remaining Ubuntu changes:
- debian/rules: Do not ship acpi/apm scripts (we handle that ourselves)
* Drop previous Ubuntu
So does it not work with dash? laptop-mode-tools uses dash and I haven't seen
this bug report. In case you
see problems when run with dash, please report.
What is dash? On Gentoo, /usr/sbin/laptop_mode uses /bin/sh, which is a
link to /bin/bash. It works, and I don't see a reason to use what
