[Bug 1299975] Re: wireless script checks wrong sys file

[Michael Vogt]

** 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

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to pm-utils in Ubuntu.
https://bugs.launchpad.net/bugs/1299975

Title:
  wireless script checks wrong sys file

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1299975/+subscriptions