This bug was fixed in the package pm-utils - 1.4.1-15
---------------
pm-utils (1.4.1-15) unstable; urgency=medium
* laptop-mode: If there is no state file (such as at boot), don't overwrite
/proc/sys/vm/ values with fixed kernel defaults, simply do nothing. This
allows sysctl.conf to set these values. Thanks to Osamu Aoki!
(Closes: #659260)
* Add 17-fix-wireless-hook.patch: Fix typo in wireless hook to make enabled
check actually work. Thanks to Whoopie! (LP: #1299975)
-- Martin Pitt <mp...@debian.org> Thu, 10 Jul 2014 14:58:31 +0200
** Changed in: pm-utils (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1299975
Title:
wireless script checks wrong sys file
Status in “pm-utils” package in Ubuntu:
Fix Released
Status in “pm-utils” source package in Trusty:
Fix Committed
Bug description:
TEST CASE:
- on a machine with a wireless interface, run:
PM_FUNCTIONS=/usr/lib/pm-utils/functions sh -ex
/usr/lib/pm-utils/power.d/wireless true
and verify that it fails with /sys/class/net/wlan0/device/enable: No such
file or directory
- install the update and run the command again and verify that the script
continue beyond the point it stopped earlier, i.e. that it stops at a later
point when running e.g. iwconfig
- now powersaving for wireless via pm-utils should work as intended from the
script
REGRESSION POTENTIAL:
- the functionality in the script was completely broken before, by fixing
this bug any bug in the power management that were previously hidden may now be
uncovered.
On Trusty (beta), while trying to diagnose an issue with the wireless
not connecting upon resume from standby, I discovered an invalid check
in '/usr/lib/pm-utils/power.d/wireless'. The script checks
'/sys/class/net/$1/device/enable' to see if the wireless device is
enabled, failing to perform any configuration if this sys file does
not exist. That happens to be the case for me (intel wireless), which
the actual location is '/sys/class/net/$1/device/enabled' (enable ->
enabled).
Changing the script to use the correct location has not fixed my
wireless resume issue, but perhaps it is contributing to wireless
issues for others. My wireless power-saving is correctly turned off
upon resume now, though (it would get stuck in power-saving mode
sometimes).
$> lsb_release -rd
Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04
$> apt-cache policy pm-utils
pm-utils:
Installed: 1.4.1-13
Candidate: 1.4.1-13
Version table:
*** 1.4.1-13 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
100 /var/lib/dpkg/status
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