** Description changed:
+ 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
+ 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
** Changed in: pm-utils (Ubuntu Trusty)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1299975
Title:
wireless script checks wrong sys file
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