** Description changed:
Normally, the wifi kill switch of my Dell D620 is enabled because I
don't need wifi often. If the system was booted with an enabled kill
switch, then I can't reactive the wireless interface any more. Only a
reboot with deactivated kill switch enables the interface again.
description: Wireless interface
product: PRO/Wireless 3945ABG Network Connection
vendor: Intel Corporation
driver = iwl3945
This problem didn't occur on gutsy (which the closed source driver).
iwl4965 suffers from the same defect.
----
WORKAROUND 1:
When killswitch is enabled (wifi off) nm-applet will disable the "[] enable
wireless" menu entry.
After turning killswitch off (wifi on), the wifi status led is still off, and
no access points are shown in network manager.
Right-clicking on nm-applet, you should see that the "[x] enable wireless"
menu entry is now activated.
Disable it and then enable it again. This should bring up the status led and
after some seconds all available networks.
No need to modprobe/rmmod in a terminal.
WORKAROUND 2 (If no #1 doesn't cut it for you):
for iwl3945:
]$ sudo rmmod iwl3945; sudo modprobe iwl3945
for iwl4965:
]$ sudo rmmod iwl4965; sudo modprobe iwl4965
+
+
+ ===
+
+ SRU Justification
+
+ Justification: disabling rfkill at boot prevents later use of wireless
+ network
+
+ Impact: disabling wireless say for use on a plane then prevents later
+ use of the wireless network without removing and readding the wireless
+ driver
+
+ Fix Description: pull back of an Intel fix for the driver which enabled
+ polling of the rfkill state
+
+ Patch: http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-
+ intrepid.git;a=commit;h=19b287c47ba5939a181e6325ad5fb79024874914
+
+ Risks: this is a driver specific change and has been tested by a number
+ of affected users
+
+ TEST CASE: boot with rfkill switch off later re-enable it
--
iwl3945 | iwl4965: Wireless can't be activated after disabling kill switch
https://bugs.launchpad.net/bugs/193970
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